Add reusable workflow for setting up SSH agent

.github/actions/ssh/action.yml

@@ -0,0 +1,42 @@
+name: SSH setup
+description: Set up the SSH agent
+
+inputs:
+ config:
+ description: The SSH configuration
+ required: true
+ key:
+ description: The private SSH key
+ required: true
+ known-hosts:
+ description: The list of known hosts
+ required: true
+
+runs:
+ using: composite
+
+ steps:
+ - name: Configure SSH
+ shell: sh
+ env:
+ CONFIG: ${{ inputs.config }}
+ KNOWN_HOSTS: ${{ inputs.known-hosts }}
+ run: |
+ mkdir -p ~/.ssh
+ echo "${CONFIG}" > ~/.ssh/config
+ echo "${KNOWN_HOSTS}" > ~/.ssh/known_hosts
+
+ - name: Start SSH agent
+ shell: bash
+ env:
+ SOCKET: /tmp/ssh-agent.sock
+ run: |
+ echo "SSH_AUTH_SOCK=${SOCKET}" >> $GITHUB_ENV
+ ssh-agent -a ${SOCKET} > /dev/null
+
+ - name: Add SSH key
+ shell: bash
+ env:
+ KEY: ${{ inputs.key }}
+ run: |
+ ssh-add - <<< "${KEY}"

.github/workflows/stage.yml

@@ -1,10 +1,10 @@
 name: Deploy (Staging)
 
 on:
- workflow_dispatch
-
-env:
- SSH_AUTH_SOCK: /tmp/ssh-agent.sock
+ workflow_dispatch: {}
+ push:
+ branches:
+  - helma-🐜
 
 jobs:
  stage:
@@ -17,6 +17,13 @@ jobs:
  steps:
  - uses: actions/checkout@v4
 
+ - name: Set up SSH agent
+ uses: ./.github/actions/ssh
+ with:
+ config: ${{ vars.SSH_CONFIG }}
+ key: ${{ secrets.SSH_PRIVATE_KEY }}
+ known-hosts: ${{ vars.SSH_KNOWN_HOSTS }}
+
  - name: Set up Java
  uses: actions/setup-java@v4
  with:
@@ -29,14 +36,6 @@ jobs:
  - 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:/ \