Add reusable workflow for setting up SSH agent

.github/actions/ssh/action.yml

@@ -0,0 +1,26 @@
+name: Set up SSH agent
+
+inputs:
+  config:
+    required: true
+    type: string
+  known-hosts:
+    required: true
+    type: string
+
+runs:
+  using: composite
+
+  steps:
+    - name: Debug
+      run: |
+        echo ${{ inputs.config }}
+        echo ${{ inputs.known-hosts }}
+
+    - name: Set up SSH agent
+      run: |
+        ssh-agent -a $SSH_AUTH_SOCK > /dev/null
+        ssh-add - <<< '${{ secrets.SSH_PRIVATE_KEY }}'
+        mkdir -p ~/.ssh
+        echo '${{ inputs.config }}' > ~/.ssh/config
+        echo '${{ inputs.known-hosts }}' > ~/.ssh/known_hosts

.github/workflows/stage.yml

@@ -1,7 +1,10 @@
 name: Deploy (Staging)
 
 on:
-  workflow_dispatch
+  workflow_dispatch: {}
+  push:
+    branches:
+      - helma-🐜
 
 env:
   SSH_AUTH_SOCK: /tmp/ssh-agent.sock
@@ -17,34 +20,13 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Java
-        uses: actions/setup-java@v4
-        with:
-          distribution: temurin
-          java-version: 21
-
-      - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v3
-
-      - name: Build with Gradle
-        run: ./gradlew installDist
-
       - name: Set up SSH agent
-        run: |
-          ssh-agent -a $SSH_AUTH_SOCK > /dev/null
-          ssh-add - <<< "${{ secrets.SSH_PRIVATE_KEY }}"
-          mkdir -p ~/.ssh
-          echo '${{ vars.SSH_CONFIG }}' > ~/.ssh/config
-          echo '${{ vars.KNOWN_HOSTS }}' > ~/.ssh/known_hosts
-
-      - name: Publish to staging server
-        run: |
-          rsync build/install/helma/ antville.dev:/ \
-            --verbose --archive --delete --compress \
-            --filter 'protect /lib/ext' \
-            --filter '+ /launcher.jar' \
-            --filter '+ /lib' \
-            --filter '- /*' \
+        uses: ./.github/actions/ssh
+        with:
+          config: ${{ vars.SSH_CONFIG }}
+          known-hosts: ${{ vars.SSH_KNOWN_HOSTS }}
+        env:
+          SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
 
-      - name: Restart Helma
-        run: ssh antville.dev restart
+      - name: Test
+        run: ssh antville.dev ping