chore: Allow auto-pr to include multiple changes

.github/workflows/official-pr.yml

@@ -31,12 +31,19 @@ jobs:
         with:
           path: official-images
           repository: docker-library/official-images
+          ref: 'node'
 
       - name: Generate Stackbrew for diff
         run: |
           cd docker-node
           ./generate-stackbrew-library.sh > ../official-images/library/node
 
+      - name: Commit changes
+        run: |
+          cd official-images
+          git add -A
+          git diff-index --quiet HEAD || git commit -m "Node: ${{ github.event.pull_request.title }}" --author="${{ github.actor }} <${{ github.actor }}@users.noreply.github.com>"
+
       - name: Create PR in official-images
         id: create-pr
         uses: peter-evans/create-pull-request@v3
@@ -45,7 +52,6 @@ jobs:
           push-to-fork: nodejs-github-bot/official-images
           path: official-images
           branch: node
-          commit-message: "Node: ${{ github.event.pull_request.title }}"
           title: "Node: ${{ github.event.pull_request.title }}"
           body: |
             Pull Request: ${{ github.event.pull_request.html_url }}