ci: init ssh outside of action (#1377)

This change finally should set up the ssh instance in the worker node to publish
correctly the generated documentation

Signed-off-by: Luca Zaninotto <luca.zaninotto@secomind.com>

Author: lusergit

.github/actions/doc-publish/action.yaml

@@ -23,24 +23,21 @@ inputs:
   docs:
     description: "The docs project location."
     required: true
-  publish-key:
-    description: "SSH deploy key for pushing docs."
-    required: true
 
 runs:
   using: "composite"
   steps:
-    - name: Setup SSH
-      uses: webfactory/ssh-agent@v0.10.0
-      with:
-        ssh-private-key: ${{ inputs.publish-key }}
     - name: Commit files
       working-directory: ${{ inputs.docs }}
       shell: bash
       run: |
         git config --local user.email "edgehog-machine@ispirata.com"
         git config --local user.name "Edgehog Bot"
         git add .
+        if git diff --cached --quiet; then
+           echo "No documentation changes to commit."
+           exit 0
+        fi
         git commit -m "Update Documentation"
     - name: Push changes
       working-directory: ${{ inputs.docs }}

.github/workflows/docs-ci.yaml

@@ -87,8 +87,14 @@ jobs:
           docs: docs
           astarte-interfaces: edgehog-astarte-interfaces
           version: ${{ steps.compute-version.outputs.version }}
+      - name: Setup SSH
+        if: ${{ inputs.publish }}
+        run: |
+          eval `ssh-agent -t 300 -s`
+          echo "${{ secrets.publish-key }}" | ssh-add -
+          mkdir -p ~/.ssh/
+          ssh-keyscan github.com >> ~/.ssh/known_hosts
       - uses: ./edgehog/.github/actions/doc-publish
         if: ${{ inputs.publish }}
         with:
           docs: docs
-          publish-key: ${{ secrets.publish-key }}