ci: enhance GitHub Actions for IPv6 and flexibility (#303)

* ci: enhance GitHub Actions for IPv6 and flexibility

- Add a new CI job for testing IPv6 in GitHub Actions workflow
- Update the Docker image version from `1.7.3` to `1.7.4`
- Add a new `protocol` input parameter to the GitHub action with a default value of `tcp`
- Change the GitHub action to use a composite run steps action instead of a Docker container
- Update the `entrypoint.sh` script to use `bash` instead of `sh`, set stricter error handling, and add a function to detect client platform and architecture
- Modify the `entrypoint.sh` script to download a specific version of `drone-ssh` based on the detected client info and execute it

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* ci: refactor CI workflow and Docker setup

- Remove IPv6 ping command from CI workflow
- Uncomment Docker run configuration in action.yml

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

---------

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.github/workflows/ci.yml

@@ -282,3 +282,31 @@ jobs:
           script: |
             whoami && echo 'hello world' && touch todo.txt
             sudo whoami
+
+  testing06:
+    name: testing ipv6
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v1
+
+      - name: Set up WARP
+        uses: fscarmen/warp-on-actions@v1.1
+        with:
+          stack: dual
+
+      - name: testing ipv6 for command
+        run: |
+          curl -m 9 --ipv6 --verbose https://google.com
+
+      - name: testing ipv6
+        uses: ./
+        with:
+          host: 2402:1f00:8000:800::2628
+          username: ubuntu
+          password: ${{ secrets.OVH_PASSWORD }}
+          protocol: tcp6
+          port: 22
+          command_timeout: 30s
+          script: |
+            whoami