* verify connection

.github/workflows/verify.yml

@@ -0,0 +1,22 @@
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+
+on: "pull_request"
+name: SSH connection
+jobs:
+  ssh:
+    name: Connect to github.com
+    runs-on: "ubuntu-latest"
+    steps:
+    - name: Install SSH key
+      uses: shimataro/ssh-key-action@development
+      with:
+        private-key: ${{ secrets.SSH_KEY }}
+        public-key: ${{ secrets.SSH_KEY_PUBLIC }}
+        name: 'id_rsa' # optional
+        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+    - name: ls
+      run: ls -la ~/.ssh/
+    - name: install packages
+      run: sudo apt install -y openssh-client
+    - name: SSH to github.com
+      run: ssh git@github.com