Enhance GHCR workflow for multi-architecture builds

.github/workflows/deploy_ghcr.yml

@@ -1,13 +1,25 @@
-name: Build and Push to GHCR
+name: Build and Push to GHCR (multi-arch)
 
 on:
   push:
     branches:
       - chatwoot-jasmine
+  workflow_dispatch:
+
+env:
+  IMAGE_NAME: ghcr.io/rodribm10/chatwoot-jasmine
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - platform: linux/amd64
+            runner: ubuntu-latest
+          - platform: linux/arm64
+            runner: ubuntu-22.04-arm
+    runs-on: ${{ matrix.runner }}
     permissions:
       contents: read
       packages: write
@@ -16,24 +28,94 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+      - name: Prepare
+        run: |
+          platform="${{ matrix.platform }}"
+          echo "PLATFORM_PAIR=${platform//\//-}" >> "$GITHUB_ENV"
+
+      # (Opcional) Se você quiser tags dinâmicas por branch/commit
+      - name: Set tag
+        run: |
+          echo "TAG=latest" >> "$GITHUB_ENV"
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Login to GitHub Container Registry
+      # QEMU só é necessário se você for cross-build.
+      # Como estamos usando runner arm nativo, não é obrigatório,
+      # mas deixar não costuma atrapalhar.
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Login to GHCR
         uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build and Push (multi-arch)
-        uses: docker/build-push-action@v5
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./docker/Dockerfile
+          platforms: ${{ matrix.platform }}
           push: true
-          platforms: linux/arm64
-          tags: ghcr.io/rodribm10/chatwoot-jasmine:latest
+
+          # Publica por digest e deixa o merge job criar a tag multi-arch final
+          outputs: type=image,name=${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+
+          # Cache (MUITO recomendado pra não estourar 6h)
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Export digest
+        run: |
+          mkdir -p "${{ runner.temp }}/digests"
+          digest="${{ steps.build.outputs.digest }}"
+          touch "${{ runner.temp }}/digests/${digest#sha256:}"
+
+      - name: Upload digest
+        uses: actions/upload-artifact@v4
+        with:
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: ${{ runner.temp }}/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    runs-on: ubuntu-latest
+    needs: [build]
+    permissions:
+      packages: write
+
+    steps:
+      - name: Download digests
+        uses: actions/download-artifact@v4
+        with:
+          path: ${{ runner.temp }}/digests
+          pattern: digests-*
+          merge-multiple: true
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Create manifest list and push
+        working-directory: ${{ runner.temp }}/digests
+        run: |
+          TAG="${{ env.IMAGE_NAME }}:latest"
+
+          docker buildx imagetools create -t "$TAG" \
+            $(printf '${{ env.IMAGE_NAME }}@sha256:%s ' *)
+
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect "${{ env.IMAGE_NAME }}:latest"