Merge pull request #117 from shimataro/develop

version 2.0.0
2025-06-19 22:52:10 +10:00 · 2020-02-08 19:00:45 +09:00 · 2020-02-08 19:00:45 +09:00 · 5bd2f032f1
commit 5bd2f032f1
parent 8deacc95b1 5f6cc712bb
32 changed files with 6152 additions and 0 deletions
--- a/.editorconfig
+++ b/.editorconfig
@ -0,0 +1,37 @@
+# http://editorconfig.org/
+# https://github.com/editorconfig/editorconfig/wiki/EditorConfig-Properties
+root = true
+
+
+# recommended settings; DO NOT CHANGE!
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+
+# common settings
+[*]
+indent_style = tab
+indent_size = 4
+tab_width = 4
+max_line_length = off
+
+quote_type = double
+curly_bracket_next_line = true
+spaces_around_operators = true
+spaces_around_brackets = none
+indent_brace_style = allman
+
+
+# JSON/YAML
+[*.{json,babelrc,code-workspace,yml,yaml}]
+indent_style = space
+indent_size = 2
+tab_width = 2
+
+
+# markdown
+[*.md]
+indent_style = space
--- a/.eslintrc.yml
+++ b/.eslintrc.yml
@ -0,0 +1,305 @@
+# https://eslint.org/
+env: # https://eslint.org/docs/user-guide/configuring#specifying-environments
+  es6: true
+  node: true
+extends:
+- eslint:recommended
+- plugin:@typescript-eslint/eslint-recommended
+- plugin:@typescript-eslint/recommended
+plugins:
+- import
+- "@typescript-eslint"
+parser: "@typescript-eslint/parser"
+parserOptions:
+  sourceType: module
+  project: ./tsconfig.json
+rules: # https://eslint.org/docs/rules/
+  accessor-pairs: error
+  array-bracket-newline: error
+  array-bracket-spacing:
+  - error
+  - never
+  array-callback-return: error
+  arrow-body-style: 'off'
+  arrow-parens:
+  - error
+  - always
+  arrow-spacing:
+  - error
+  - after: true
+    before: true
+  block-scoped-var: error
+  block-spacing: error
+  brace-style:
+  - error
+  - allman
+  callback-return: error
+  capitalized-comments: 'off'
+  class-methods-use-this: error
+  comma-dangle:
+  - error
+  - always-multiline
+  comma-spacing:
+  - error
+  - after: true
+    before: false
+  comma-style:
+  - error
+  - last
+  complexity:
+  - error
+  computed-property-spacing:
+  - error
+  - never
+  consistent-return: 'off'
+  consistent-this: error
+  curly: error
+  default-case: 'off'
+  dot-location:
+  - error
+  - property
+  dot-notation:
+  - error
+  - allowKeywords: true
+  eol-last: error
+  eqeqeq: error
+  for-direction: error
+  func-call-spacing: error
+  func-name-matching: error
+  func-names:
+  - error
+  - never
+  func-style:
+  - error
+  - declaration
+  function-paren-newline: error
+  generator-star-spacing: error
+  getter-return: error
+  global-require: error
+  guard-for-in: error
+  handle-callback-err: error
+  id-blacklist: error
+  id-length: 'off'
+  id-match: error
+  implicit-arrow-linebreak:
+  - error
+  - below
+  indent:
+  - error
+  - tab
+  indent-legacy: 'off'
+  init-declarations: error
+  jsx-quotes: error
+  key-spacing: error
+  keyword-spacing:
+  - error
+  - overrides:
+      if:
+        after: false
+      for:
+        after: false
+      while:
+        after: false
+      catch:
+        after: false
+      with:
+        after: false
+  line-comment-position: 'off'
+  linebreak-style:
+  - error
+  - unix
+  lines-around-comment: 'off'
+  lines-around-directive: error
+  lines-between-class-members:
+  - error
+  - always
+  max-depth: error
+  max-len: 'off'
+  max-lines: 'off'
+  max-nested-callbacks: error
+  max-params: 'off'
+  max-statements: 'off'
+  max-statements-per-line: error
+  multiline-comment-style:
+  - error
+  - separate-lines
+  multiline-ternary: error
+  new-cap: error
+  new-parens: error
+  newline-after-var: 'off'
+  newline-before-return: 'off'
+  no-alert: error
+  no-array-constructor: error
+  no-await-in-loop: error
+  no-bitwise: error
+  no-buffer-constructor: error
+  no-caller: error
+  no-catch-shadow: error
+  no-confusing-arrow: error
+  no-continue: 'off'
+  no-div-regex: error
+  no-duplicate-imports: error
+  no-else-return: 'off'
+  no-empty-function: 'off'
+  no-eq-null: error
+  no-eval: error
+  no-extend-native: error
+  no-extra-bind: error
+  no-extra-label: error
+  no-extra-parens: error
+  no-floating-decimal: error
+  no-implicit-coercion: error
+  no-implicit-globals: error
+  no-implied-eval: error
+  no-inline-comments: 'off'
+  no-invalid-this: error
+  no-iterator: error
+  no-label-var: error
+  no-labels: error
+  no-lonely-if: error
+  no-loop-func: error
+  no-magic-numbers: 'off'
+  no-mixed-operators: error
+  no-mixed-requires: error
+  no-multi-assign: error
+  no-multi-spaces: error
+  no-multi-str: error
+  no-multiple-empty-lines:
+  - error
+  - max: 1
+  no-native-reassign: error
+  no-negated-condition: error
+  no-negated-in-lhs: error
+  no-nested-ternary: error
+  no-new: error
+  no-new-func: error
+  no-new-object: error
+  no-new-require: error
+  no-new-wrappers: error
+  no-octal-escape: error
+  no-param-reassign: 'off'
+  no-path-concat: error
+  no-plusplus: 'off'
+  no-process-env: 'off'
+  no-process-exit: error
+  no-proto: error
+  no-prototype-builtins: 'off'
+  no-restricted-globals: error
+  no-restricted-imports: error
+  no-restricted-modules: error
+  no-restricted-properties: error
+  no-restricted-syntax: error
+  no-return-assign: error
+  no-return-await: error
+  no-script-url: error
+  no-self-compare: error
+  no-sequences: error
+  no-shadow: error
+  no-shadow-restricted-names: error
+  no-spaced-func: error
+  no-sync: 'off'
+  no-tabs: 'off'
+  no-template-curly-in-string: error
+  no-ternary: error
+  no-throw-literal: error
+  no-trailing-spaces: error
+  no-undef-init: error
+  no-undefined: 'off'
+  no-underscore-dangle: 'off'
+  no-unmodified-loop-condition: error
+  no-unneeded-ternary: error
+  no-unused-expressions: error
+  no-use-before-define: 'off'
+  no-useless-call: error
+  no-useless-computed-key: error
+  no-useless-concat: error
+  no-useless-constructor: error
+  no-useless-rename: error
+  no-useless-return: error
+  no-var: error
+  no-void: error
+  no-warning-comments: error
+  no-whitespace-before-property: error
+  no-with: error
+  nonblock-statement-body-position: error
+  object-curly-newline: 'off'
+  object-curly-spacing:
+  - error
+  - never
+  object-property-newline: error
+  object-shorthand: 'off'
+  one-var: 'off'
+  one-var-declaration-per-line: error
+  operator-assignment: error
+  operator-linebreak: error
+  padded-blocks: 'off'
+  padding-line-between-statements: error
+  prefer-arrow-callback: error
+  prefer-const: error
+  prefer-destructuring: error
+  prefer-numeric-literals: error
+  prefer-promise-reject-errors: error
+  prefer-reflect: error
+  prefer-rest-params: error
+  prefer-spread: error
+  prefer-template: error
+  quote-props: 'off'
+  quotes: 'off'
+  radix: error
+  require-await: error
+  require-jsdoc: error
+  rest-spread-spacing:
+  - error
+  - never
+  semi: error
+  semi-spacing: error
+  semi-style:
+  - error
+  - last
+  sort-imports: 'off'
+  sort-keys: 'off'
+  sort-vars: error
+  space-before-blocks: error
+  space-before-function-paren: 'off'
+  space-in-parens:
+  - error
+  - never
+  space-infix-ops: error
+  space-unary-ops: error
+  spaced-comment:
+  - error
+  - always
+  strict: error
+  switch-colon-spacing: error
+  symbol-description: error
+  template-curly-spacing:
+  - error
+  - never
+  template-tag-spacing: error
+  unicode-bom:
+  - error
+  - never
+  valid-jsdoc:
+  - error
+  - requireParamType: false
+    requireReturn: false
+    requireReturnType: false
+  vars-on-top: error
+  wrap-iife: error
+  wrap-regex: error
+  yield-star-spacing: error
+  yoda:
+  - error
+  - never
+
+  # import plugin
+  import/extensions: 'off'
+  import/no-unresolved:
+  - error
+
+  # @typescript-eslint plugin
+  "@typescript-eslint/explicit-function-return-type": 'off'
+  "@typescript-eslint/no-use-before-define":
+  - error
+  - functions: false
+  "@typescript-eslint/strict-boolean-expressions": error
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@ -0,0 +1,32 @@
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+
+on: push
+name: Build
+jobs:
+  build:
+    name: Build on ${{ matrix.os }} / Node.js v${{ matrix.nodejs }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+        - Windows-latest
+        - macOS-latest
+        - Ubuntu-latest
+        nodejs:
+        - 12
+      fail-fast: false
+    steps:
+    - name: Turn off auto-crlf
+      run: git config --global core.autocrlf false
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install Node.js
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.nodejs }}
+    - name: Install dependencies
+      run: npm ci
+    - name: Build
+      run: npm run build
+    - name: Verify
+      run: npm run verify
--- a/.github/workflows/verify-on-macos.yml
+++ b/.github/workflows/verify-on-macos.yml
@ -0,0 +1,41 @@
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+
+on: push
+name: macOS
+jobs:
+  ssh:
+    name: Connect to github.com
+    runs-on: macos-latest
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone git@github.com:shimataro/ssh-key-action.git tmp
+  ssh-with-name:
+    name: Connect to github.com with name and config
+    runs-on: macos-latest
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+        name: ssh_key_name # optional
+        config: | # optional
+          Host github
+            Hostname github.com
+            User git
+            IdentityFile ~/.ssh/ssh_key_name
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone github:shimataro/ssh-key-action.git tmp
--- a/.github/workflows/verify-on-ubuntu.yml
+++ b/.github/workflows/verify-on-ubuntu.yml
@ -0,0 +1,41 @@
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+
+on: push
+name: Ubuntu
+jobs:
+  ssh:
+    name: Connect to github.com
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone git@github.com:shimataro/ssh-key-action.git tmp
+  ssh-with-name:
+    name: Connect to github.com with name and config
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+        name: ssh_key_name # optional
+        config: | # optional
+          Host github
+            Hostname github.com
+            User git
+            IdentityFile ~/.ssh/ssh_key_name
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone github:shimataro/ssh-key-action.git tmp
--- a/.github/workflows/verify-on-ubuntu1604.yml
+++ b/.github/workflows/verify-on-ubuntu1604.yml
@ -0,0 +1,41 @@
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+
+on: push
+name: Ubuntu 16.04
+jobs:
+  ssh:
+    name: Connect to github.com
+    runs-on: ubuntu-16.04
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone git@github.com:shimataro/ssh-key-action.git tmp
+  ssh-with-name:
+    name: Connect to github.com with name and config
+    runs-on: ubuntu-16.04
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+        name: ssh_key_name # optional
+        config: | # optional
+          Host github
+            Hostname github.com
+            User git
+            IdentityFile ~/.ssh/ssh_key_name
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone github:shimataro/ssh-key-action.git tmp
--- a/.github/workflows/verify-on-windows.yml
+++ b/.github/workflows/verify-on-windows.yml
@ -0,0 +1,41 @@
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+
+on: push
+name: Windows
+jobs:
+  ssh:
+    name: Connect to github.com
+    runs-on: windows-latest
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+    - name: print created files
+      run: ls ~/.ssh
+    - name: git clone through SSH
+      run: git clone git@github.com:shimataro/ssh-key-action.git tmp
+  ssh-with-name:
+    name: Connect to github.com with name and config
+    runs-on: windows-latest
+    steps:
+    - name: Checkout source codes
+      uses: actions/checkout@v2
+    - name: Install SSH key
+      uses: ./.
+      with:
+        key: ${{ secrets.SSH_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+        name: ssh_key_name # optional
+        config: | # optional
+          Host github
+            Hostname github.com
+            User git
+            IdentityFile ~/.ssh/ssh_key_name
+    - name: print created files
+      run: ls ~/.ssh
+    - name: git clone through SSH
+      run: git clone github:shimataro/ssh-key-action.git tmp
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,14 @@
+# temporary files
+*~
+*.bak
+*.log
+*.swp
+*.tmp
+
+# image caches
+.DS_Store
+Thumbs.db
+
+# patch/merge
+*.orig
+*.rej
--- a/.markdownlint.yml
+++ b/.markdownlint.yml
@ -0,0 +1,7 @@
+MD007:
+  indent: 4
+MD013:
+  line_length: 255
+MD024:
+  siblings_only: true
+MD026: false
--- a/.npmrc
+++ b/.npmrc
@ -0,0 +1,4 @@
+#also=dev
+engine-strict=true
+heading="🍣"
+save-prefix=""
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -0,0 +1,107 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [2.0.0] - 2020-02-08
+
+### Changed
+
+* rename `private-key` to `key`
+* rename `known-hosts` to `known_hosts`
+* make `known_hosts` required
+
+## [1.6.5] - 2020-02-08
+
+### Others
+
+* update version of [Checkout](https://github.com/marketplace/actions/checkout) action
+
+## [1.6.4] - 2020-01-27
+
+### Fixed
+
+* `node_modules/.bin` error (thanks [@george3447](https://github.com/george3447))
+
+## [1.6.3] - 2020-01-27
+
+### Others
+
+* add Q&A
+
+## [1.6.2] - 2020-01-25
+
+### Others
+
+* some updates
+
+## [1.6.1] - 2020-01-19
+
+### Fixed
+
+* Some bugfixes
+
+## [1.6.0] - 2020-01-18
+
+### Changed
+
+* `public-key` is no longer necessarily
+
+## [1.5.0] - 2019/12/30
+
+### Changed
+
+* Append contents of `config` and `known_hosts` when called multiple times.
+
+## [1.4.0] - 2019/12/22
+
+### Added
+
+* `config` option
+
+## [1.3.0] - 2019/09/29
+
+### Added
+
+* `known-hosts` option
+
+## [1.2.0] - 2019/09/22
+
+### Fixed
+
+* CI trigger
+* example code in [README](README.md)
+
+### Others
+
+* Install only `dependencies` packages.
+
+## [1.1.0] - 2019/09/19
+
+### Others
+
+* Support Visual Studio Code officially.
+* Use GitHub Actions for build test.
+
+## [1.0.0] - 2019/09/18
+
+* First release.
+
+[Unreleased]: https://github.com/shimataro/ssh-key-action/compare/v2.0.0...HEAD
+[2.0.0]: https://github.com/shimataro/ssh-key-action/compare/v1.6.5...v2.0.0
+[1.6.5]: https://github.com/shimataro/ssh-key-action/compare/v1.6.4...v1.6.5
+[1.6.4]: https://github.com/shimataro/ssh-key-action/compare/v1.6.3...v1.6.4
+[1.6.3]: https://github.com/shimataro/ssh-key-action/compare/v1.6.2...v1.6.3
+[1.6.2]: https://github.com/shimataro/ssh-key-action/compare/v1.6.1...v1.6.2
+[1.6.1]: https://github.com/shimataro/ssh-key-action/compare/v1.6.0...v1.6.1
+[1.6.0]: https://github.com/shimataro/ssh-key-action/compare/v1.5.0...v1.6.0
+[1.5.0]: https://github.com/shimataro/ssh-key-action/compare/v1.4.0...v1.5.0
+[1.4.0]: https://github.com/shimataro/ssh-key-action/compare/v1.3.0...v1.4.0
+[1.3.0]: https://github.com/shimataro/ssh-key-action/compare/v1.2.0...v1.3.0
+[1.2.0]: https://github.com/shimataro/ssh-key-action/compare/v1.1.0...v1.2.0
+[1.1.0]: https://github.com/shimataro/ssh-key-action/compare/v1.0.0...v1.1.0
+[1.0.0]: https://github.com/shimataro/ssh-key-action/compare/8deacc95b1ee5732107e56baa4c8aac4c386ef7e...v1.0.0
--- a/README.md
+++ b/README.md
@ -0,0 +1,141 @@
+# Install SSH Key
+
+[![Build][image-build]][link-build]
+[![Windows][image-verify-windows]][link-verify-windows]
+[![macOS][image-verify-macos]][link-verify-macos]
+[![Ubuntu][image-verify-ubuntu]][link-verify-ubuntu]
+[![Ubuntu 16.04][image-verify-ubuntu1604]][link-verify-ubuntu1604]
+[![Release][image-release]][link-release]
+[![License][image-license]][link-license]
+[![Stars][image-stars]][link-stars]
+
+This action installs SSH key in `~/.ssh`.
+
+Useful for SCP, SFTP, and `rsync` over SSH in deployment script.
+
+**Works on all [virtual environment](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources) -- Windows, macOS, Ubuntu and Ubuntu 16.04.**
+
+## Usage
+
+Add your SSH key to your product secrets by clicking `Settings` - `Secrets` - `Add a new secret` beforehand.
+
+**NOTE:** OPENSSH format (key begins with `-----BEGIN OPENSSH PRIVATE KEY-----`) may not work due to OpenSSH version on VM. Please use PEM format (begins with `-----BEGIN RSA PRIVATE KEY-----`) instead.
+
+```yaml
+runs-on: ubuntu-latest
+steps:
+- name: Install SSH key
+  uses: shimataro/ssh-key-action@v2
+  with:
+    key: ${{ secrets.SSH_KEY }}
+    name: id_rsa # optional
+    known_hosts: ${{ secrets.KNOWN_HOSTS }}
+    config: ${{ secrets.CONFIG }} # ssh_config; optional
+- name: rsync over ssh
+  run: rsync ./foo/ user@remote:bar/
+```
+
+See [Workflow syntax for GitHub Actions](https://help.github.com/en/articles/workflow-syntax-for-github-actions) for details.
+
+### Install multiple keys
+
+If you want to install multiple keys, call this action multiple times.
+It is useful for port forwarding.
+
+**NOTE:**  When this action is called multiple times, **the contents of `known_hosts` and `config` will be appended**. `key` must be saved as different name, by using `name` option.
+
+```yaml
+runs-on: ubuntu-latest
+steps:
+- name: Install SSH key of bastion
+  uses: shimataro/ssh-key-action@v2
+  with:
+    key: ${{ secrets.SSH_KEY_OF_BASTION }}
+    name: id_rsa-bastion
+    known_hosts: ${{ secrets.KNOWN_HOSTS_OF_BASTION }}
+    config: |
+      Host bastion
+        HostName xxx.xxx.xxx.xxx
+        User user-of-bastion
+        IdentityFile ~/.ssh/id_rsa-bastion
+- name: Install SSH key of target
+  uses: shimataro/ssh-key-action@v2
+  with:
+    key: ${{ secrets.SSH_KEY_OF_TARGET }}
+    name: id_rsa-target
+    known_hosts: ${{ secrets.KNOWN_HOSTS_OF_TARGET }} # will be appended!
+    config: |                                         # will be appended!
+      Host target
+        HostName yyy.yyy.yyy.yyy
+        User user-of-target
+        IdentityFile ~/.ssh/id_rsa-target
+        ProxyCommand ssh -W %h:%p bastion
+- name: SCP via port-forwarding
+  run: scp ./foo/ target:bar/
+```
+
+## Q&A
+
+### SSH failed even though key has been installed.
+
+Check belows:
+
+* `Load key "/HOME/.ssh/id_rsa": invalid format`:
+    * OPENSSH format (key begins with `-----BEGIN OPENSSH PRIVATE KEY-----`) may not work.
+    * Use PEM format (begins with `-----BEGIN RSA PRIVATE KEY-----`).
+* `Host key verification failed.`:
+    * Set `known_hosts` option correctly (use `ssh-keyscan` command).
+
+### How do I use encrypted SSH key?
+
+This action doesn't support encrypted key directly.
+Here are some solutions:
+
+* decrypting key beforehand: best bet, and works on any VM
+* `sshpass` command: next best bet, but not supported on Windows
+* `expect` command: be careful not to expose passphrase to console
+* `SSH_ASKPASS` environment variable: might be troublesome
+
+### Which one is the best way for transferring files, "direct SCP/SFTP/rsync" or "SCP/SFTP/rsync via bastion"?
+
+I recommend **rsync via bastion**.
+It has some advantages over other methods:
+
+* "Rsync via bastion" doesn't require to update workflow files and `secrets` even if it is necessary to transfer files to multiple servers.
+    * Other methods require to update `known_hosts` if servers have changed.
+* Rsync:
+    * is fastest of all.
+    * does **NOT** break files even if disconnected during transferring.
+    * can remove files that don't exist on server.
+* SCP is [deprecated by OpenSSH](https://www.openssh.com/txt/release-8.0) due to outdated and inflexible protocol.
+* Using bastion is more secure because:
+    * it is not necessarily to expose SSH port on servers to public.
+        * Address filtering is less effective.
+        * Because Azure address range is [very wide](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/virtual-environments-for-github-hosted-runners#ip-addresses-of-github-hosted-runners).
+        * And will be updated continuously.
+    * if security incident ―e.g., private key leaked― occurs, it's OK just to remove `authorized_keys` on bastion.
+
+## License
+
+The scripts and documentation in this project are released under the [MIT License](LICENSE)
+
+## Changelog
+
+See [CHANGELOG.md](CHANGELOG.md).
+
+[image-build]: https://github.com/shimataro/ssh-key-action/workflows/Build/badge.svg?event=push&branch=v2
+[link-build]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3ABuild
+[image-verify-windows]: https://github.com/shimataro/ssh-key-action/workflows/Windows/badge.svg?event=push&branch=v2
+[link-verify-windows]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3AWindows
+[image-verify-macos]: https://github.com/shimataro/ssh-key-action/workflows/macOS/badge.svg?event=push&branch=v2
+[link-verify-macos]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3AmacOS
+[image-verify-ubuntu]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu/badge.svg?event=push&branch=v2
+[link-verify-ubuntu]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3AUbuntu
+[image-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu%2016.04/badge.svg?event=push&branch=v2
+[link-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3A%22Ubuntu+16.04%22
+[image-release]: https://img.shields.io/github/release/shimataro/ssh-key-action.svg
+[link-release]: https://github.com/shimataro/ssh-key-action/releases
+[image-license]: https://img.shields.io/github/license/shimataro/ssh-key-action.svg
+[link-license]: ./LICENSE
+[image-stars]: https://img.shields.io/github/stars/shimataro/ssh-key-action.svg
+[link-stars]: https://github.com/shimataro/ssh-key-action/stargazers
--- a/action.yml
+++ b/action.yml
@ -0,0 +1,26 @@
+# https://help.github.com/en/articles/metadata-syntax-for-github-actions
+name: "Install SSH Key"
+description: "Install SSH key in ~/.ssh"
+author: "shimataro"
+branding:
+  icon: "terminal"
+  color: "gray-dark"
+inputs:
+  key:
+    description: "SSH private key"
+    required: true
+  name:
+    description: "SSH key file name (default: id_rsa)"
+    required: false
+    default: "id_rsa"
+  known_hosts:
+    description: "public keys of SSH servers"
+    required: true
+    default: ""
+  config:
+    description: "SSH config"
+    required: false
+    default: ""
+runs:
+  using: "node12"
+  main: "lib/main.js"
--- a/lib/main.js
+++ b/lib/main.js
@ -0,0 +1,106 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const fs_1 = __importDefault(require("fs"));
+const path_1 = __importDefault(require("path"));
+const core = __importStar(require("@actions/core"));
+/**
+ * main function
+ */
+function main() {
+    try {
+        const files = [
+            {
+                name: core.getInput("name"),
+                contents: core.getInput("key", {
+                    required: true,
+                }),
+                options: {
+                    mode: 0o400,
+                    flag: "ax",
+                },
+            },
+            {
+                name: "known_hosts",
+                contents: prependLf(core.getInput("known_hosts", {
+                    required: true,
+                })),
+                options: {
+                    mode: 0o644,
+                    flag: "a",
+                },
+            },
+            {
+                name: "config",
+                contents: prependLf(core.getInput("config")),
+                options: {
+                    mode: 0o644,
+                    flag: "a",
+                },
+            },
+        ];
+        // create ".ssh" directory
+        const home = getHomeDirectory();
+        const dirName = path_1.default.resolve(home, ".ssh");
+        fs_1.default.mkdirSync(dirName, {
+            recursive: true,
+            mode: 0o700,
+        });
+        // create files
+        for (const file of files) {
+            const fileName = path_1.default.join(dirName, file.name);
+            fs_1.default.writeFileSync(fileName, file.contents, file.options);
+        }
+        console.log(`SSH key has been stored to ${dirName} successfully.`);
+    }
+    catch (err) {
+        core.setFailed(err.message);
+    }
+}
+/**
+ * get home directory
+ * @returns home directory
+ */
+function getHomeDirectory() {
+    const homeEnv = getHomeEnv();
+    const home = process.env[homeEnv];
+    if (home === undefined) {
+        throw Error(`${homeEnv} is not defined`);
+    }
+    return home;
+}
+/**
+ * get HOME environment name
+ * @returns HOME environment name
+ */
+function getHomeEnv() {
+    if (process.platform === "win32") {
+        // Windows
+        return "USERPROFILE";
+    }
+    // macOS / Linux
+    return "HOME";
+}
+/**
+ * prepend LF to value if not empty
+ * @param value the value to prepend LF
+ * @returns prepended value
+ */
+function prependLf(value) {
+    if (value.length === 0) {
+        // do nothing if empty
+        return "";
+    }
+    return `\n${value}`;
+}
+main();
+//# sourceMappingURL=main.js.map
--- a/lib/main.js.map
+++ b/lib/main.js.map
@ -0,0 +1 @@
+{"version":3,"file":"main.js","sourceRoot":"","sources":["../src/main.ts"],"names":[],"mappings":";;;;;;;;;;;;AAAA,4CAAoB;AACpB,gDAAwB;AAExB,oDAAsC;AAStC;;GAEG;AACH,SAAS,IAAI;IAEZ,IACA;QACC,MAAM,KAAK,GAAe;YACzB;gBACC,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC;gBAC3B,QAAQ,EAAE,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE;oBAC9B,QAAQ,EAAE,IAAI;iBACd,CAAC;gBACF,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,IAAI;iBACV;aACD;YACD;gBACC,IAAI,EAAE,aAAa;gBACnB,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,EAAE;oBAChD,QAAQ,EAAE,IAAI;iBACd,CAAC,CAAC;gBACH,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;YACD;gBACC,IAAI,EAAE,QAAQ;gBACd,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;gBAC5C,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;SACD,CAAC;QAEF,0BAA0B;QAC1B,MAAM,IAAI,GAAG,gBAAgB,EAAE,CAAC;QAChC,MAAM,OAAO,GAAG,cAAI,CAAC,OAAO,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC;QAC3C,YAAE,CAAC,SAAS,CAAC,OAAO,EAAE;YACrB,SAAS,EAAE,IAAI;YACf,IAAI,EAAE,KAAK;SACX,CAAC,CAAC;QAEH,eAAe;QACf,KAAI,MAAM,IAAI,IAAI,KAAK,EACvB;YACC,MAAM,QAAQ,GAAG,cAAI,CAAC,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;YAC/C,YAAE,CAAC,aAAa,CAAC,QAAQ,EAAE,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;SACxD;QAED,OAAO,CAAC,GAAG,CAAC,8BAA8B,OAAO,gBAAgB,CAAC,CAAC;KACnE;IACD,OAAM,GAAG,EACT;QACC,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;KAC5B;AACF,CAAC;AAED;;;GAGG;AACH,SAAS,gBAAgB;IAExB,MAAM,OAAO,GAAG,UAAU,EAAE,CAAC;IAC7B,MAAM,IAAI,GAAG,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IAClC,IAAG,IAAI,KAAK,SAAS,EACrB;QACC,MAAM,KAAK,CAAC,GAAG,OAAO,iBAAiB,CAAC,CAAC;KACzC;IAED,OAAO,IAAI,CAAC;AACb,CAAC;AAED;;;GAGG;AACH,SAAS,UAAU;IAElB,IAAG,OAAO,CAAC,QAAQ,KAAK,OAAO,EAC/B;QACC,UAAU;QACV,OAAO,aAAa,CAAC;KACrB;IAED,gBAAgB;IAChB,OAAO,MAAM,CAAC;AACf,CAAC;AAED;;;;GAIG;AACH,SAAS,SAAS,CAAC,KAAa;IAE/B,IAAG,KAAK,CAAC,MAAM,KAAK,CAAC,EACrB;QACC,sBAAsB;QACtB,OAAO,EAAE,CAAC;KACV;IAED,OAAO,KAAK,KAAK,EAAE,CAAC;AACrB,CAAC;AAED,IAAI,EAAE,CAAC"}
--- a/node_modules/@actions/core/README.md
+++ b/node_modules/@actions/core/README.md
@ -0,0 +1,140 @@
+# `@actions/core`
+
+> Core functions for setting results, logging, registering secrets and exporting variables across actions
+
+## Usage
+
+### Import the package
+
+```js
+// javascript
+const core = require('@actions/core');
+
+// typescript
+import * as core from '@actions/core';
+```
+
+#### Inputs/Outputs
+
+Action inputs can be read with `getInput`.  Outputs can be set with `setOutput` which makes them available to be mapped into inputs of other actions to ensure they are decoupled.
+
+```js
+const myInput = core.getInput('inputName', { required: true });
+
+core.setOutput('outputKey', 'outputVal');
+```
+
+#### Exporting variables
+
+Since each step runs in a separate process, you can use `exportVariable` to add it to this step and future steps environment blocks.
+
+```js
+core.exportVariable('envVar', 'Val');
+```
+
+#### Setting a secret
+
+Setting a secret registers the secret with the runner to ensure it is masked in logs.
+
+```js
+core.setSecret('myPassword');
+```
+
+#### PATH Manipulation
+
+To make a tool's path available in the path for the remainder of the job (without altering the machine or containers state), use `addPath`.  The runner will prepend the path given to the jobs PATH.
+
+```js
+core.addPath('/path/to/mytool');
+```
+
+#### Exit codes
+
+You should use this library to set the failing exit code for your action.  If status is not set and the script runs to completion, that will lead to a success.
+
+```js
+const core = require('@actions/core');
+
+try {
+  // Do stuff
+}
+catch (err) {
+  // setFailed logs the message and sets a failing exit code
+  core.setFailed(`Action failed with error ${err}`);
+}
+
+Note that `setNeutral` is not yet implemented in actions V2 but equivalent functionality is being planned.
+
+```
+
+#### Logging
+
+Finally, this library provides some utilities for logging. Note that debug logging is hidden from the logs by default. This behavior can be toggled by enabling the [Step Debug Logs](../../docs/action-debugging.md#step-debug-logs).
+
+```js
+const core = require('@actions/core');
+
+const myInput = core.getInput('input');
+try {
+  core.debug('Inside try block');
+  
+  if (!myInput) {
+    core.warning('myInput was not set');
+  }
+  
+  // Do stuff
+}
+catch (err) {
+  core.error(`Error ${err}, action may still succeed though`);
+}
+```
+
+This library can also wrap chunks of output in foldable groups.
+
+```js
+const core = require('@actions/core')
+
+// Manually wrap output
+core.startGroup('Do some function')
+doSomeFunction()
+core.endGroup()
+
+// Wrap an asynchronous function call
+const result = await core.group('Do something async', async () => {
+  const response = await doSomeHTTPRequest()
+  return response
+})
+```
+
+#### Action state
+
+You can use this library to save state and get state for sharing information between a given wrapper action: 
+
+**action.yml**
+```yaml
+name: 'Wrapper action sample'
+inputs:
+  name:
+    default: 'GitHub'
+runs:
+  using: 'node12'
+  main: 'main.js'
+  post: 'cleanup.js'
+```
+
+In action's `main.js`:
+
+```js
+const core = require('@actions/core');
+
+core.saveState("pidToKill", 12345);
+```
+
+In action's `cleanup.js`:
+```js
+const core = require('@actions/core');
+
+var pid = core.getState("pidToKill");
+
+process.kill(pid);
+```
--- a/node_modules/@actions/core/lib/command.d.ts
+++ b/node_modules/@actions/core/lib/command.d.ts
@ -0,0 +1,16 @@
+interface CommandProperties {
+    [key: string]: string;
+}
+/**
+ * Commands
+ *
+ * Command Format:
+ *   ::name key=value,key=value::message
+ *
+ * Examples:
+ *   ::warning::This is the message
+ *   ::set-env name=MY_VAR::some value
+ */
+export declare function issueCommand(command: string, properties: CommandProperties, message: string): void;
+export declare function issue(name: string, message?: string): void;
+export {};
--- a/node_modules/@actions/core/lib/command.js
+++ b/node_modules/@actions/core/lib/command.js
@ -0,0 +1,78 @@
+"use strict";
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const os = __importStar(require("os"));
+/**
+ * Commands
+ *
+ * Command Format:
+ *   ::name key=value,key=value::message
+ *
+ * Examples:
+ *   ::warning::This is the message
+ *   ::set-env name=MY_VAR::some value
+ */
+function issueCommand(command, properties, message) {
+    const cmd = new Command(command, properties, message);
+    process.stdout.write(cmd.toString() + os.EOL);
+}
+exports.issueCommand = issueCommand;
+function issue(name, message = '') {
+    issueCommand(name, {}, message);
+}
+exports.issue = issue;
+const CMD_STRING = '::';
+class Command {
+    constructor(command, properties, message) {
+        if (!command) {
+            command = 'missing.command';
+        }
+        this.command = command;
+        this.properties = properties;
+        this.message = message;
+    }
+    toString() {
+        let cmdStr = CMD_STRING + this.command;
+        if (this.properties && Object.keys(this.properties).length > 0) {
+            cmdStr += ' ';
+            let first = true;
+            for (const key in this.properties) {
+                if (this.properties.hasOwnProperty(key)) {
+                    const val = this.properties[key];
+                    if (val) {
+                        if (first) {
+                            first = false;
+                        }
+                        else {
+                            cmdStr += ',';
+                        }
+                        cmdStr += `${key}=${escapeProperty(val)}`;
+                    }
+                }
+            }
+        }
+        cmdStr += `${CMD_STRING}${escapeData(this.message)}`;
+        return cmdStr;
+    }
+}
+function escapeData(s) {
+    return (s || '')
+        .replace(/%/g, '%25')
+        .replace(/\r/g, '%0D')
+        .replace(/\n/g, '%0A');
+}
+function escapeProperty(s) {
+    return (s || '')
+        .replace(/%/g, '%25')
+        .replace(/\r/g, '%0D')
+        .replace(/\n/g, '%0A')
+        .replace(/:/g, '%3A')
+        .replace(/,/g, '%2C');
+}
+//# sourceMappingURL=command.js.map
--- a/node_modules/@actions/core/lib/command.js.map
+++ b/node_modules/@actions/core/lib/command.js.map
@ -0,0 +1 @@
+{"version":3,"file":"command.js","sourceRoot":"","sources":["../src/command.ts"],"names":[],"mappings":";;;;;;;;;AAAA,uCAAwB;AAQxB;;;;;;;;;GASG;AACH,SAAgB,YAAY,CAC1B,OAAe,EACf,UAA6B,EAC7B,OAAe;IAEf,MAAM,GAAG,GAAG,IAAI,OAAO,CAAC,OAAO,EAAE,UAAU,EAAE,OAAO,CAAC,CAAA;IACrD,OAAO,CAAC,MAAM,CAAC,KAAK,CAAC,GAAG,CAAC,QAAQ,EAAE,GAAG,EAAE,CAAC,GAAG,CAAC,CAAA;AAC/C,CAAC;AAPD,oCAOC;AAED,SAAgB,KAAK,CAAC,IAAY,EAAE,UAAkB,EAAE;IACtD,YAAY,CAAC,IAAI,EAAE,EAAE,EAAE,OAAO,CAAC,CAAA;AACjC,CAAC;AAFD,sBAEC;AAED,MAAM,UAAU,GAAG,IAAI,CAAA;AAEvB,MAAM,OAAO;IAKX,YAAY,OAAe,EAAE,UAA6B,EAAE,OAAe;QACzE,IAAI,CAAC,OAAO,EAAE;YACZ,OAAO,GAAG,iBAAiB,CAAA;SAC5B;QAED,IAAI,CAAC,OAAO,GAAG,OAAO,CAAA;QACtB,IAAI,CAAC,UAAU,GAAG,UAAU,CAAA;QAC5B,IAAI,CAAC,OAAO,GAAG,OAAO,CAAA;IACxB,CAAC;IAED,QAAQ;QACN,IAAI,MAAM,GAAG,UAAU,GAAG,IAAI,CAAC,OAAO,CAAA;QAEtC,IAAI,IAAI,CAAC,UAAU,IAAI,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC,MAAM,GAAG,CAAC,EAAE;YAC9D,MAAM,IAAI,GAAG,CAAA;YACb,IAAI,KAAK,GAAG,IAAI,CAAA;YAChB,KAAK,MAAM,GAAG,IAAI,IAAI,CAAC,UAAU,EAAE;gBACjC,IAAI,IAAI,CAAC,UAAU,CAAC,cAAc,CAAC,GAAG,CAAC,EAAE;oBACvC,MAAM,GAAG,GAAG,IAAI,CAAC,UAAU,CAAC,GAAG,CAAC,CAAA;oBAChC,IAAI,GAAG,EAAE;wBACP,IAAI,KAAK,EAAE;4BACT,KAAK,GAAG,KAAK,CAAA;yBACd;6BAAM;4BACL,MAAM,IAAI,GAAG,CAAA;yBACd;wBAED,MAAM,IAAI,GAAG,GAAG,IAAI,cAAc,CAAC,GAAG,CAAC,EAAE,CAAA;qBAC1C;iBACF;aACF;SACF;QAED,MAAM,IAAI,GAAG,UAAU,GAAG,UAAU,CAAC,IAAI,CAAC,OAAO,CAAC,EAAE,CAAA;QACpD,OAAO,MAAM,CAAA;IACf,CAAC;CACF;AAED,SAAS,UAAU,CAAC,CAAS;IAC3B,OAAO,CAAC,CAAC,IAAI,EAAE,CAAC;SACb,OAAO,CAAC,IAAI,EAAE,KAAK,CAAC;SACpB,OAAO,CAAC,KAAK,EAAE,KAAK,CAAC;SACrB,OAAO,CAAC,KAAK,EAAE,KAAK,CAAC,CAAA;AAC1B,CAAC;AAED,SAAS,cAAc,CAAC,CAAS;IAC/B,OAAO,CAAC,CAAC,IAAI,EAAE,CAAC;SACb,OAAO,CAAC,IAAI,EAAE,KAAK,CAAC;SACpB,OAAO,CAAC,KAAK,EAAE,KAAK,CAAC;SACrB,OAAO,CAAC,KAAK,EAAE,KAAK,CAAC;SACrB,OAAO,CAAC,IAAI,EAAE,KAAK,CAAC;SACpB,OAAO,CAAC,IAAI,EAAE,KAAK,CAAC,CAAA;AACzB,CAAC"}
--- a/node_modules/@actions/core/lib/core.d.ts
+++ b/node_modules/@actions/core/lib/core.d.ts
@ -0,0 +1,112 @@
+/**
+ * Interface for getInput options
+ */
+export interface InputOptions {
+    /** Optional. Whether the input is required. If required and not present, will throw. Defaults to false */
+    required?: boolean;
+}
+/**
+ * The code to exit an action
+ */
+export declare enum ExitCode {
+    /**
+     * A code indicating that the action was successful
+     */
+    Success = 0,
+    /**
+     * A code indicating that the action was a failure
+     */
+    Failure = 1
+}
+/**
+ * Sets env variable for this action and future actions in the job
+ * @param name the name of the variable to set
+ * @param val the value of the variable
+ */
+export declare function exportVariable(name: string, val: string): void;
+/**
+ * Registers a secret which will get masked from logs
+ * @param secret value of the secret
+ */
+export declare function setSecret(secret: string): void;
+/**
+ * Prepends inputPath to the PATH (for this action and future actions)
+ * @param inputPath
+ */
+export declare function addPath(inputPath: string): void;
+/**
+ * Gets the value of an input.  The value is also trimmed.
+ *
+ * @param     name     name of the input to get
+ * @param     options  optional. See InputOptions.
+ * @returns   string
+ */
+export declare function getInput(name: string, options?: InputOptions): string;
+/**
+ * Sets the value of an output.
+ *
+ * @param     name     name of the output to set
+ * @param     value    value to store
+ */
+export declare function setOutput(name: string, value: string): void;
+/**
+ * Sets the action status to failed.
+ * When the action exits it will be with an exit code of 1
+ * @param message add error issue message
+ */
+export declare function setFailed(message: string): void;
+/**
+ * Writes debug message to user log
+ * @param message debug message
+ */
+export declare function debug(message: string): void;
+/**
+ * Adds an error issue
+ * @param message error issue message
+ */
+export declare function error(message: string): void;
+/**
+ * Adds an warning issue
+ * @param message warning issue message
+ */
+export declare function warning(message: string): void;
+/**
+ * Writes info to log with console.log.
+ * @param message info message
+ */
+export declare function info(message: string): void;
+/**
+ * Begin an output group.
+ *
+ * Output until the next `groupEnd` will be foldable in this group
+ *
+ * @param name The name of the output group
+ */
+export declare function startGroup(name: string): void;
+/**
+ * End an output group.
+ */
+export declare function endGroup(): void;
+/**
+ * Wrap an asynchronous function call in a group.
+ *
+ * Returns the same type as the function itself.
+ *
+ * @param name The name of the group
+ * @param fn The function to wrap in the group
+ */
+export declare function group<T>(name: string, fn: () => Promise<T>): Promise<T>;
+/**
+ * Saves state for current action, the state can only be retrieved by this action's post job execution.
+ *
+ * @param     name     name of the state to store
+ * @param     value    value to store
+ */
+export declare function saveState(name: string, value: string): void;
+/**
+ * Gets the value of an state set by this action's main execution.
+ *
+ * @param     name     name of the state to get
+ * @returns   string
+ */
+export declare function getState(name: string): string;
--- a/node_modules/@actions/core/lib/core.js
+++ b/node_modules/@actions/core/lib/core.js
@ -0,0 +1,202 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const command_1 = require("./command");
+const os = __importStar(require("os"));
+const path = __importStar(require("path"));
+/**
+ * The code to exit an action
+ */
+var ExitCode;
+(function (ExitCode) {
+    /**
+     * A code indicating that the action was successful
+     */
+    ExitCode[ExitCode["Success"] = 0] = "Success";
+    /**
+     * A code indicating that the action was a failure
+     */
+    ExitCode[ExitCode["Failure"] = 1] = "Failure";
+})(ExitCode = exports.ExitCode || (exports.ExitCode = {}));
+//-----------------------------------------------------------------------
+// Variables
+//-----------------------------------------------------------------------
+/**
+ * Sets env variable for this action and future actions in the job
+ * @param name the name of the variable to set
+ * @param val the value of the variable
+ */
+function exportVariable(name, val) {
+    process.env[name] = val;
+    command_1.issueCommand('set-env', { name }, val);
+}
+exports.exportVariable = exportVariable;
+/**
+ * Registers a secret which will get masked from logs
+ * @param secret value of the secret
+ */
+function setSecret(secret) {
+    command_1.issueCommand('add-mask', {}, secret);
+}
+exports.setSecret = setSecret;
+/**
+ * Prepends inputPath to the PATH (for this action and future actions)
+ * @param inputPath
+ */
+function addPath(inputPath) {
+    command_1.issueCommand('add-path', {}, inputPath);
+    process.env['PATH'] = `${inputPath}${path.delimiter}${process.env['PATH']}`;
+}
+exports.addPath = addPath;
+/**
+ * Gets the value of an input.  The value is also trimmed.
+ *
+ * @param     name     name of the input to get
+ * @param     options  optional. See InputOptions.
+ * @returns   string
+ */
+function getInput(name, options) {
+    const val = process.env[`INPUT_${name.replace(/ /g, '_').toUpperCase()}`] || '';
+    if (options && options.required && !val) {
+        throw new Error(`Input required and not supplied: ${name}`);
+    }
+    return val.trim();
+}
+exports.getInput = getInput;
+/**
+ * Sets the value of an output.
+ *
+ * @param     name     name of the output to set
+ * @param     value    value to store
+ */
+function setOutput(name, value) {
+    command_1.issueCommand('set-output', { name }, value);
+}
+exports.setOutput = setOutput;
+//-----------------------------------------------------------------------
+// Results
+//-----------------------------------------------------------------------
+/**
+ * Sets the action status to failed.
+ * When the action exits it will be with an exit code of 1
+ * @param message add error issue message
+ */
+function setFailed(message) {
+    process.exitCode = ExitCode.Failure;
+    error(message);
+}
+exports.setFailed = setFailed;
+//-----------------------------------------------------------------------
+// Logging Commands
+//-----------------------------------------------------------------------
+/**
+ * Writes debug message to user log
+ * @param message debug message
+ */
+function debug(message) {
+    command_1.issueCommand('debug', {}, message);
+}
+exports.debug = debug;
+/**
+ * Adds an error issue
+ * @param message error issue message
+ */
+function error(message) {
+    command_1.issue('error', message);
+}
+exports.error = error;
+/**
+ * Adds an warning issue
+ * @param message warning issue message
+ */
+function warning(message) {
+    command_1.issue('warning', message);
+}
+exports.warning = warning;
+/**
+ * Writes info to log with console.log.
+ * @param message info message
+ */
+function info(message) {
+    process.stdout.write(message + os.EOL);
+}
+exports.info = info;
+/**
+ * Begin an output group.
+ *
+ * Output until the next `groupEnd` will be foldable in this group
+ *
+ * @param name The name of the output group
+ */
+function startGroup(name) {
+    command_1.issue('group', name);
+}
+exports.startGroup = startGroup;
+/**
+ * End an output group.
+ */
+function endGroup() {
+    command_1.issue('endgroup');
+}
+exports.endGroup = endGroup;
+/**
+ * Wrap an asynchronous function call in a group.
+ *
+ * Returns the same type as the function itself.
+ *
+ * @param name The name of the group
+ * @param fn The function to wrap in the group
+ */
+function group(name, fn) {
+    return __awaiter(this, void 0, void 0, function* () {
+        startGroup(name);
+        let result;
+        try {
+            result = yield fn();
+        }
+        finally {
+            endGroup();
+        }
+        return result;
+    });
+}
+exports.group = group;
+//-----------------------------------------------------------------------
+// Wrapper action state
+//-----------------------------------------------------------------------
+/**
+ * Saves state for current action, the state can only be retrieved by this action's post job execution.
+ *
+ * @param     name     name of the state to store
+ * @param     value    value to store
+ */
+function saveState(name, value) {
+    command_1.issueCommand('save-state', { name }, value);
+}
+exports.saveState = saveState;
+/**
+ * Gets the value of an state set by this action's main execution.
+ *
+ * @param     name     name of the state to get
+ * @returns   string
+ */
+function getState(name) {
+    return process.env[`STATE_${name}`] || '';
+}
+exports.getState = getState;
+//# sourceMappingURL=core.js.map
--- a/node_modules/@actions/core/lib/core.js.map
+++ b/node_modules/@actions/core/lib/core.js.map
@ -0,0 +1 @@
+{"version":3,"file":"core.js","sourceRoot":"","sources":["../src/core.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;AAAA,uCAA6C;AAE7C,uCAAwB;AACxB,2CAA4B;AAU5B;;GAEG;AACH,IAAY,QAUX;AAVD,WAAY,QAAQ;IAClB;;OAEG;IACH,6CAAW,CAAA;IAEX;;OAEG;IACH,6CAAW,CAAA;AACb,CAAC,EAVW,QAAQ,GAAR,gBAAQ,KAAR,gBAAQ,QAUnB;AAED,yEAAyE;AACzE,YAAY;AACZ,yEAAyE;AAEzE;;;;GAIG;AACH,SAAgB,cAAc,CAAC,IAAY,EAAE,GAAW;IACtD,OAAO,CAAC,GAAG,CAAC,IAAI,CAAC,GAAG,GAAG,CAAA;IACvB,sBAAY,CAAC,SAAS,EAAE,EAAC,IAAI,EAAC,EAAE,GAAG,CAAC,CAAA;AACtC,CAAC;AAHD,wCAGC;AAED;;;GAGG;AACH,SAAgB,SAAS,CAAC,MAAc;IACtC,sBAAY,CAAC,UAAU,EAAE,EAAE,EAAE,MAAM,CAAC,CAAA;AACtC,CAAC;AAFD,8BAEC;AAED;;;GAGG;AACH,SAAgB,OAAO,CAAC,SAAiB;IACvC,sBAAY,CAAC,UAAU,EAAE,EAAE,EAAE,SAAS,CAAC,CAAA;IACvC,OAAO,CAAC,GAAG,CAAC,MAAM,CAAC,GAAG,GAAG,SAAS,GAAG,IAAI,CAAC,SAAS,GAAG,OAAO,CAAC,GAAG,CAAC,MAAM,CAAC,EAAE,CAAA;AAC7E,CAAC;AAHD,0BAGC;AAED;;;;;;GAMG;AACH,SAAgB,QAAQ,CAAC,IAAY,EAAE,OAAsB;IAC3D,MAAM,GAAG,GACP,OAAO,CAAC,GAAG,CAAC,SAAS,IAAI,CAAC,OAAO,CAAC,IAAI,EAAE,GAAG,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC,IAAI,EAAE,CAAA;IACrE,IAAI,OAAO,IAAI,OAAO,CAAC,QAAQ,IAAI,CAAC,GAAG,EAAE;QACvC,MAAM,IAAI,KAAK,CAAC,oCAAoC,IAAI,EAAE,CAAC,CAAA;KAC5D;IAED,OAAO,GAAG,CAAC,IAAI,EAAE,CAAA;AACnB,CAAC;AARD,4BAQC;AAED;;;;;GAKG;AACH,SAAgB,SAAS,CAAC,IAAY,EAAE,KAAa;IACnD,sBAAY,CAAC,YAAY,EAAE,EAAC,IAAI,EAAC,EAAE,KAAK,CAAC,CAAA;AAC3C,CAAC;AAFD,8BAEC;AAED,yEAAyE;AACzE,UAAU;AACV,yEAAyE;AAEzE;;;;GAIG;AACH,SAAgB,SAAS,CAAC,OAAe;IACvC,OAAO,CAAC,QAAQ,GAAG,QAAQ,CAAC,OAAO,CAAA;IACnC,KAAK,CAAC,OAAO,CAAC,CAAA;AAChB,CAAC;AAHD,8BAGC;AAED,yEAAyE;AACzE,mBAAmB;AACnB,yEAAyE;AAEzE;;;GAGG;AACH,SAAgB,KAAK,CAAC,OAAe;IACnC,sBAAY,CAAC,OAAO,EAAE,EAAE,EAAE,OAAO,CAAC,CAAA;AACpC,CAAC;AAFD,sBAEC;AAED;;;GAGG;AACH,SAAgB,KAAK,CAAC,OAAe;IACnC,eAAK,CAAC,OAAO,EAAE,OAAO,CAAC,CAAA;AACzB,CAAC;AAFD,sBAEC;AAED;;;GAGG;AACH,SAAgB,OAAO,CAAC,OAAe;IACrC,eAAK,CAAC,SAAS,EAAE,OAAO,CAAC,CAAA;AAC3B,CAAC;AAFD,0BAEC;AAED;;;GAGG;AACH,SAAgB,IAAI,CAAC,OAAe;IAClC,OAAO,CAAC,MAAM,CAAC,KAAK,CAAC,OAAO,GAAG,EAAE,CAAC,GAAG,CAAC,CAAA;AACxC,CAAC;AAFD,oBAEC;AAED;;;;;;GAMG;AACH,SAAgB,UAAU,CAAC,IAAY;IACrC,eAAK,CAAC,OAAO,EAAE,IAAI,CAAC,CAAA;AACtB,CAAC;AAFD,gCAEC;AAED;;GAEG;AACH,SAAgB,QAAQ;IACtB,eAAK,CAAC,UAAU,CAAC,CAAA;AACnB,CAAC;AAFD,4BAEC;AAED;;;;;;;GAOG;AACH,SAAsB,KAAK,CAAI,IAAY,EAAE,EAAoB;;QAC/D,UAAU,CAAC,IAAI,CAAC,CAAA;QAEhB,IAAI,MAAS,CAAA;QAEb,IAAI;YACF,MAAM,GAAG,MAAM,EAAE,EAAE,CAAA;SACpB;gBAAS;YACR,QAAQ,EAAE,CAAA;SACX;QAED,OAAO,MAAM,CAAA;IACf,CAAC;CAAA;AAZD,sBAYC;AAED,yEAAyE;AACzE,uBAAuB;AACvB,yEAAyE;AAEzE;;;;;GAKG;AACH,SAAgB,SAAS,CAAC,IAAY,EAAE,KAAa;IACnD,sBAAY,CAAC,YAAY,EAAE,EAAC,IAAI,EAAC,EAAE,KAAK,CAAC,CAAA;AAC3C,CAAC;AAFD,8BAEC;AAED;;;;;GAKG;AACH,SAAgB,QAAQ,CAAC,IAAY;IACnC,OAAO,OAAO,CAAC,GAAG,CAAC,SAAS,IAAI,EAAE,CAAC,IAAI,EAAE,CAAA;AAC3C,CAAC;AAFD,4BAEC"}
--- a/node_modules/@actions/core/package.json
+++ b/node_modules/@actions/core/package.json
@ -0,0 +1,44 @@
+{
+  "name": "@actions/core",
+  "version": "1.2.2",
+  "description": "Actions core lib",
+  "keywords": [
+    "github",
+    "actions",
+    "core"
+  ],
+  "homepage": "https://github.com/actions/toolkit/tree/master/packages/core",
+  "license": "MIT",
+  "main": "lib/core.js",
+  "types": "lib/core.d.ts",
+  "directories": {
+    "lib": "lib",
+    "test": "__tests__"
+  },
+  "files": [
+    "lib"
+  ],
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/actions/toolkit.git",
+    "directory": "packages/core"
+  },
+  "scripts": {
+    "audit-moderate": "npm install && npm audit --audit-level=moderate",
+    "test": "echo \"Error: run tests from root\" && exit 1",
+    "tsc": "tsc"
+  },
+  "bugs": {
+    "url": "https://github.com/actions/toolkit/issues"
+  },
+  "devDependencies": {
+    "@types/node": "^12.0.2"
+  }
+
+,"_resolved": "https://registry.npmjs.org/@actions/core/-/core-1.2.2.tgz"
+,"_integrity": "sha512-IbCx7oefq+Gi6FWbSs2Fnw8VkEI6Y4gvjrYprY3RV//ksq/KPMlClOerJ4jRosyal6zkUIc8R9fS/cpRMlGClg=="
+,"_from": "@actions/core@1.2.2"
+}
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@ -0,0 +1,48 @@
+{
+  "name": "install-ssh-key",
+  "version": "2.0.0",
+  "private": true,
+  "description": "Install SSH key in .ssh",
+  "main": "lib/main.js",
+  "engines": {
+    "node": ">=8.0.0",
+    "npm": ">=5.7.0"
+  },
+  "scripts": {
+    "build": "tsc",
+    "check-updates": "ncu",
+    "lint": "run-p lint:*",
+    "lint:ts": "eslint ./src --ext .ts",
+    "lint:md": "markdownlint . --ignore node_modules --ignore examples",
+    "lint:yaml": "yamllint **/{,.}*.{yml,yaml} --ignore=node_modules/**",
+    "verify": "run-p lint"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/shimataro/ssh-key-action.git"
+  },
+  "keywords": [
+    "actions",
+    "github actions",
+    "rsync",
+    "ssh",
+    "ssh key"
+  ],
+  "author": "shimataro",
+  "license": "MIT",
+  "dependencies": {
+    "@actions/core": "1.2.2"
+  },
+  "devDependencies": {
+    "@types/node": "13.7.0",
+    "@typescript-eslint/eslint-plugin": "2.19.0",
+    "@typescript-eslint/parser": "2.19.0",
+    "eslint": "6.8.0",
+    "eslint-plugin-import": "2.20.1",
+    "markdownlint-cli": "0.21.0",
+    "npm-check-updates": "4.0.1",
+    "npm-run-all": "4.1.5",
+    "typescript": "3.7.5",
+    "yaml-lint": "1.2.4"
+  }
+}
--- a/scripts/create-release-branch.sh
+++ b/scripts/create-release-branch.sh
@ -0,0 +1,133 @@
+#!/bin/bash
+# requires following packages:
+# - git; I believe it's already installed.
+# - sed; GNU sed is preferred. POSIX sed may not work.
+
+set -e
+
+BASE_BRANCH="develop"
+
+PACKAGE_NAME="ssh-key-action"
+URL_PRODUCT="https://github.com/shimataro/${PACKAGE_NAME}"
+URL_REPOSITORY="${URL_PRODUCT}.git"
+URL_COMPARE="${URL_PRODUCT}/compare"
+URL_RELEASE="${URL_PRODUCT}/releases/new"
+
+COLOR_ERROR="\e[1;41m"
+COLOR_SECTION="\e[1;34m"
+COLOR_COMMAND_NAME="\e[1;34m"
+COLOR_OPTION="\e[4;36m"
+COLOR_COMMAND="\e[4m"
+COLOR_FILE="\e[1;34m"
+COLOR_BRANCH="\e[1;31m"
+COLOR_INPUT="\e[1;31m"
+COLOR_SELECT="\e[1;32m"
+COLOR_RESET="\e[m"
+
+function main() {
+	cd $(dirname ${0})/..
+
+	if [ $# -lt 1 ]; then
+		usage
+	fi
+
+	local VERSION=$1
+	local BRANCH="release/v${VERSION}"
+	local TAG="v${VERSION}"
+
+	check_version_format ${VERSION}
+	check_current_branch
+
+	create_branch ${BRANCH}
+	./scripts/prepare-release.sh ${VERSION}
+	finish ${VERSION} ${BRANCH} ${TAG}
+}
+
+function usage() {
+	local COMMAND=`basename ${0}`
+
+	echo -e "${COLOR_SECTION}NAME${COLOR_RESET}
+	${COMMAND} - Create a branch and prepare for new release
+
+${COLOR_SECTION}SYNOPSIS${COLOR_RESET}
+	${COLOR_COMMAND_NAME}${COMMAND}${COLOR_RESET} <${COLOR_OPTION}new-version${COLOR_RESET}>
+
+${COLOR_SECTION}DESCRIPTION${COLOR_RESET}
+	This command:
+	- creates a new branch for release
+	- updates ${COLOR_FILE}CHANGELOG.md${COLOR_RESET}
+	- updates package version in ${COLOR_FILE}package.json${COLOR_RESET}
+	- updates dependencies version in ${COLOR_FILE}package.json${COLOR_RESET}
+	- verifies
+	- ...and commits!
+
+	${COLOR_OPTION}new-version${COLOR_RESET} must follow \"Semantic Versioning\" <https://semver.org/>.
+"
+	exit 1
+}
+
+function check_version_format() {
+	if [[ $1 =~ ^[0-9]+\.[0-9]+\.[0-9]+ ]]; then
+		return
+	fi
+
+	echo -e "${COLOR_ERROR}ERROR:${COLOR_RESET} Follow \"Semantic Versioning\" <https://semver.org/> for new version.
+" >&2
+	exit 2
+}
+
+function check_current_branch() {
+	local CURRENT_BRANCH=`git rev-parse --abbrev-ref HEAD`
+	if [ ${CURRENT_BRANCH} = ${BASE_BRANCH} ]; then
+		return
+	fi
+
+	echo -e "${COLOR_ERROR}ERROR:${COLOR_RESET} Work on ${COLOR_BRANCH}${BASE_BRANCH}${COLOR_RESET} branch
+	${COLOR_COMMAND}git checkout ${BASE_BRANCH}${COLOR_RESET}
+" >&2
+	exit 2
+}
+
+function create_branch() {
+	local BRANCH=$1
+
+	git checkout -b ${BRANCH} ${BASE_BRANCH}
+}
+
+function finish() {
+	local VERSION=$1
+	local BRANCH=$2
+	local TAG=$3
+	local TARGET_BRANCH="v${VERSION%%[!0-9]*}"
+
+	echo -e "
+Branch ${COLOR_BRANCH}${BRANCH}${COLOR_RESET} has been created.
+Remaining processes are...
+
+1. Make sure all changes are correct
+	${COLOR_COMMAND}git diff ${BASE_BRANCH} ${BRANCH}${COLOR_RESET}
+2. Push to remote origin
+	${COLOR_COMMAND}git push --set-upstream origin ${BRANCH}${COLOR_RESET}
+3. Create a pull-request: ${COLOR_BRANCH}${BRANCH}${COLOR_RESET} to ${COLOR_BRANCH}${BASE_BRANCH}${COLOR_RESET}
+	${URL_COMPARE}/${BASE_BRANCH}...${BRANCH}?expand=1
+	select ${COLOR_SELECT}Squash and merge${COLOR_RESET}
+4. Create a pull-request: ${COLOR_BRANCH}${BASE_BRANCH}${COLOR_RESET} to ${COLOR_BRANCH}${TARGET_BRANCH}${COLOR_RESET}
+	${URL_COMPARE}/${TARGET_BRANCH}...${BASE_BRANCH}?expand=1&title=version%20${VERSION}
+	select ${COLOR_SELECT}Create a merge commit${COLOR_RESET}
+5. Create a new release
+	${URL_RELEASE}?tag=${TAG}&target=${TARGET_BRANCH}&title=${PACKAGE_NAME}%20${VERSION}%20released
+	Tag version: ${COLOR_INPUT}${TAG}${COLOR_RESET}
+	Target: ${COLOR_INPUT}${TARGET_BRANCH}${COLOR_RESET}
+	Release title: ${COLOR_INPUT}${PACKAGE_NAME} ${VERSION} released${COLOR_RESET}
+	Description this release: (copy and paste CHANGELOG.md)
+6. Post processing
+	${COLOR_COMMAND}git checkout ${BASE_BRANCH}${COLOR_RESET}
+	${COLOR_COMMAND}git pull${COLOR_RESET}
+	${COLOR_COMMAND}git fetch -p${COLOR_RESET}
+	${COLOR_COMMAND}git branch -D ${BRANCH}${COLOR_RESET}
+
+That's all!
+"
+}
+
+main "$@"
--- a/scripts/prepare-release.sh
+++ b/scripts/prepare-release.sh
@ -0,0 +1,112 @@
+#!/bin/bash
+# requires following packages:
+# - git; I believe it's already installed.
+# - sed; GNU sed is preferred. POSIX sed may not work.
+
+set -e
+
+COLOR_ERROR="\e[1;41m"
+COLOR_SECTION="\e[1;34m"
+COLOR_COMMAND_NAME="\e[1;34m"
+COLOR_OPTION="\e[4;36m"
+COLOR_COMMAND="\e[4m"
+COLOR_FILE="\e[1;34m"
+COLOR_BRANCH="\e[1;31m"
+COLOR_INPUT="\e[1;31m"
+COLOR_SELECT="\e[1;32m"
+COLOR_RESET="\e[m"
+
+function main() {
+	if [ $# -lt 1 ]; then
+		usage
+	fi
+
+	cd $(dirname ${0})/..
+
+	local VERSION=$1
+	check_version_format ${VERSION}
+
+	update_changelog ${VERSION}
+	update_package_version ${VERSION}
+	update_dependencies_version
+	regenerate_package_lock
+	build_package
+	commit_changes ${VERSION}
+}
+
+function usage() {
+	local COMMAND=`basename ${0}`
+
+	echo -e "${COLOR_SECTION}NAME${COLOR_RESET}
+	${COMMAND} - Prepare for new release
+
+${COLOR_SECTION}SYNOPSIS${COLOR_RESET}
+	${COLOR_COMMAND_NAME}${COMMAND}${COLOR_RESET} <${COLOR_OPTION}new-version${COLOR_RESET}>
+
+${COLOR_SECTION}DESCRIPTION${COLOR_RESET}
+	This command:
+	- updates ${COLOR_FILE}CHANGELOG.md${COLOR_RESET}
+	- updates package version in ${COLOR_FILE}package.json${COLOR_RESET}
+	- updates dependencies version in ${COLOR_FILE}package.json${COLOR_RESET}
+	- verifies
+	- ...and commits!
+
+	${COLOR_OPTION}new-version${COLOR_RESET} must follow \"Semantic Versioning\" <https://semver.org/>.
+"
+	exit 1
+}
+
+function check_version_format() {
+	if [[ $1 =~ ^[0-9]+\.[0-9]+\.[0-9]+ ]]; then
+		return
+	fi
+
+	echo -e "${COLOR_ERROR}ERROR:${COLOR_RESET} Follow \"Semantic Versioning\" <https://semver.org/> for new version.
+" >&2
+	exit 2
+}
+
+function update_changelog() {
+	local VERSION=$1
+	local DATE=`date "+%Y-%m-%d"`
+	local KEYWORD="Unreleased"
+
+	sed -i".bak" -r \
+		-e "s/^((##\s+)\[${KEYWORD}\])$/\1\n\n\2[${VERSION}] - ${DATE}/" \
+		-e "s/^(\[${KEYWORD}\](.*))(v.*)\.\.\.HEAD$/\1v${VERSION}...HEAD\n[${VERSION}]\2\3...v${VERSION}/" \
+		CHANGELOG.md
+}
+
+function update_package_version() {
+	local VERSION=$1
+
+	sed -i".bak" -r \
+		-e "s/(\"version\"\s*:\s*)\".*?\"/\1\"${VERSION}\"/" \
+		package.json
+}
+
+function update_dependencies_version() {
+	npm ci
+	npm run check-updates -- -u
+}
+
+function regenerate_package_lock() {
+	rm -rf package-lock.json node_modules
+	npm install
+}
+
+function build_package() {
+	npm run build
+	npm run verify
+}
+
+function commit_changes() {
+	local VERSION=$1
+
+	rm -rf node_modules
+	npm ci --only=production
+	git add CHANGELOG.md package.json package-lock.json node_modules lib
+	git commit -m "version ${VERSION}"
+}
+
+main "$@"
--- a/scripts/rebuild.sh
+++ b/scripts/rebuild.sh
@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+rm -rf node_modules package-lock.json
+npm i
+npm run build
+npm run verify
+
+rm -rf node_modules
+npm ci --only=production
+git add node_modules package-lock.json lib
--- a/scripts/update-dependencies.sh
+++ b/scripts/update-dependencies.sh
@ -0,0 +1,40 @@
+#!/bin/bash
+# update dependencies
+
+set -e
+
+DATE=$(date +"%Y%m%d")
+BRANCH=feature/update-dependencies-${DATE}
+COLOR_SUCCESS="\e[1;32m"
+COLOR_RESET="\e[m"
+
+# create branch
+git checkout develop
+git checkout -b ${BRANCH}
+
+# check updates
+npm ci
+npm run check-updates -- -u
+
+# re-install packages
+rm -rf package-lock.json node_modules
+npm i
+
+# check
+npm run build
+npm run verify
+
+# commit
+rm -rf node_modules
+npm ci --only=production
+git add package.json package-lock.json node_modules
+git commit -m "update dependencies"
+
+# finished!
+echo -e "
+${COLOR_SUCCESS}🎉All dependencies are updated successfully.🎉${COLOR_RESET}
+
+Push changes and merge into 'develop' branch.
+
+    git push --set-upstream origin ${BRANCH}
+"
--- a/src/main.ts
+++ b/src/main.ts
@ -0,0 +1,122 @@
+import fs from "fs";
+import path from "path";
+
+import * as core from "@actions/core";
+
+interface FileInfo
+{
+	name: string;
+	contents: string;
+	options: fs.WriteFileOptions;
+}
+
+/**
+ * main function
+ */
+function main(): void
+{
+	try
+	{
+		const files: FileInfo[] = [
+			{
+				name: core.getInput("name"),
+				contents: core.getInput("key", {
+					required: true,
+				}),
+				options: {
+					mode: 0o400,
+					flag: "ax",
+				},
+			},
+			{
+				name: "known_hosts",
+				contents: prependLf(core.getInput("known_hosts", {
+					required: true,
+				})),
+				options: {
+					mode: 0o644,
+					flag: "a",
+				},
+			},
+			{
+				name: "config",
+				contents: prependLf(core.getInput("config")),
+				options: {
+					mode: 0o644,
+					flag: "a",
+				},
+			},
+		];
+
+		// create ".ssh" directory
+		const home = getHomeDirectory();
+		const dirName = path.resolve(home, ".ssh");
+		fs.mkdirSync(dirName, {
+			recursive: true,
+			mode: 0o700,
+		});
+
+		// create files
+		for(const file of files)
+		{
+			const fileName = path.join(dirName, file.name);
+			fs.writeFileSync(fileName, file.contents, file.options);
+		}
+
+		console.log(`SSH key has been stored to ${dirName} successfully.`);
+	}
+	catch(err)
+	{
+		core.setFailed(err.message);
+	}
+}
+
+/**
+ * get home directory
+ * @returns home directory
+ */
+function getHomeDirectory(): string
+{
+	const homeEnv = getHomeEnv();
+	const home = process.env[homeEnv];
+	if(home === undefined)
+	{
+		throw Error(`${homeEnv} is not defined`);
+	}
+
+	return home;
+}
+
+/**
+ * get HOME environment name
+ * @returns HOME environment name
+ */
+function getHomeEnv(): string
+{
+	if(process.platform === "win32")
+	{
+		// Windows
+		return "USERPROFILE";
+	}
+
+	// macOS / Linux
+	return "HOME";
+}
+
+/**
+ * prepend LF to value if not empty
+ * @param value the value to prepend LF
+ * @returns prepended value
+ */
+function prependLf(value: string): string
+{
+	if(value.length === 0)
+	{
+		// do nothing if empty
+		return "";
+	}
+
+	return `\n${value}`;
+}
+
+main();
--- a/ssh-key-action.code-workspace
+++ b/ssh-key-action.code-workspace
@ -0,0 +1,31 @@
+{
+  "folders": [
+    {
+      "path": "."
+    }
+  ],
+  "settings": {
+    "eslint.enable": true,
+    "json.format.enable": true,
+    "typescript.format.enable": true,
+    "typescript.format.insertSpaceAfterCommaDelimiter": true,
+    "typescript.format.insertSpaceAfterConstructor": false,
+    "typescript.format.insertSpaceAfterFunctionKeywordForAnonymousFunctions": false,
+    "typescript.format.insertSpaceAfterKeywordsInControlFlowStatements": false,
+    "typescript.format.insertSpaceAfterOpeningAndBeforeClosingNonemptyParenthesis": false,
+    "typescript.format.insertSpaceAfterOpeningAndBeforeClosingNonemptyBraces": false,
+    "typescript.format.insertSpaceAfterOpeningAndBeforeClosingNonemptyBrackets": false,
+    "typescript.format.insertSpaceAfterSemicolonInForStatements": true,
+    "typescript.format.insertSpaceBeforeAndAfterBinaryOperators": true,
+    "typescript.format.insertSpaceBeforeFunctionParenthesis": false,
+    "typescript.format.placeOpenBraceOnNewLineForFunctions": true,
+    "typescript.format.placeOpenBraceOnNewLineForControlBlocks": true,
+    "typescript.validate.enable": true
+  },
+  "extensions": {
+    "recommendations": [
+      "EditorConfig.EditorConfig",
+      "eg2.vscode-npm-script"
+    ]
+  }
+}
--- a/tsconfig.json
+++ b/tsconfig.json
@ -0,0 +1,29 @@
+{
+  "compilerOptions": {
+    "target": "es6",
+    "module": "commonjs",
+    "lib": [
+      "es6"
+    ],
+    "sourceMap": true,
+    "outDir": "./lib",
+    "rootDir": "./src",
+
+    "strict": true,
+    "noImplicitAny": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true,
+    "strictBindCallApply": true,
+    "strictPropertyInitialization": true,
+    "noImplicitThis": true,
+    "alwaysStrict": true,
+
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+
+    "esModuleInterop": true
+  },
+  "exclude": ["node_modules", "**/*.test.ts"]
+}
				`@ -0,0 +1 @@`
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