add official image PR automation (#219)

.github/workflows/automatic-updates.yml

@@ -23,8 +23,9 @@ jobs:
 
       - name: Create update PR
         id: cpr
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v7
         with:
+          token: ${{ secrets.GH_API_TOKEN }}
           author: "rocketchat-github-ci <buildmaster@rocket.chat>"
           branch: update-branch
           base: main

.github/workflows/official-pr.yml

@@ -0,0 +1,67 @@
+name: Create official images PR
+
+on:
+  pull_request_target:
+    types:
+      - closed
+
+    paths:
+      - ".github/workflows/official-pr.yml"
+      - "**/Dockerfile"
+      - "stackbrew.js"
+
+jobs:
+  pr:
+    runs-on: ubuntu-latest
+    if: github.repository_owner == 'rocketchat' && github.event.pull_request.merged_by != ''
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: Checkout the Docker.Official.Image repo
+        uses: actions/checkout@v4
+        with:
+          path: Docker.Official.Image
+          ref: ${{ github.base_ref }}
+          fetch-depth: 50
+
+      - name: Checkout the official-images repo
+        uses: actions/checkout@v4
+        with:
+          path: official-images
+          repository: docker-library/official-images
+
+      - name: Generate Stackbrew for diff
+        run: |
+          cd Docker.Official.Image
+          ./stackbrew.js > ../official-images/library/rocket.chat
+
+      - name: Create PR in official-images
+        id: create-pr
+        uses: peter-evans/create-pull-request@v7
+        with:
+          token: ${{ secrets.GH_API_TOKEN }}
+          push-to-fork: rocketchat/official-images
+          path: official-images
+          branch: rocketchat
+          commit-message: "Rocket.Chat: ${{ github.event.pull_request.title }}"
+          title: "Rocket.Chat: ${{ github.event.pull_request.title }}"
+          body: |
+            Pull Request: ${{ github.event.pull_request.html_url }}
+
+      - name: PR details
+        run: |
+          echo "Pull Request Number - ${{ steps.create-pr.outputs.pull-request-number }}"
+          echo "Pull Request URL - ${{ steps.create-pr.outputs.pull-request-url }}"
+
+      - name: Create PR comment
+        uses: peter-evans/create-or-update-comment@v4
+        if: ${{ steps.create-pr.outputs.pull-request-url != '' }}
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          body: |
+            Created PR on the official-images repo (${{ steps.create-pr.outputs.pull-request-url }}). See https://github.com/docker-library/faq#an-images-source-changed-in-git-now-what if you are wondering when it will be available on the Docker Hub.
+
+      - name: Dump context
+        if: always()
+        uses: crazy-max/ghaction-dump-context@v2