Merge pull request #139 from voxpupuli/multi-arch-builds

ci: introduce multi arch builds on dedicated runners

Author: bastelfreak

.github/workflows/build_container.yml

@@ -16,10 +16,19 @@ permissions:
 
 jobs:
   build-and-push-container:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.runner }}
     permissions:
       contents: read
       packages: write
+    strategy:
+      matrix:
+        include:
+          - label: x86_64
+            platform: amd64
+            runner: ubuntu-24.04
+          - label: AArch64
+            platform: arm64
+            runner: ubuntu-24.04-arm
     steps:
       - name: Source checkout
         uses: actions/checkout@v6
@@ -28,13 +37,52 @@ jobs:
         uses: voxpupuli/gha-build-and-publish-a-container@v2
         with:
           registry_password: ${{ secrets.GITHUB_TOKEN }}
-          build_arch: linux/amd64,linux/arm64
+          build_arch: linux/${{ matrix.platform }}
           buildfile: Containerfile
           docker_username: voxpupulibot
           docker_password: ${{ secrets.DOCKERHUB_BOT_ADMIN_TOKEN }}
           tags: |
-            ghcr.io/voxpupuli/renovate:latest
-            docker.io/voxpupuli/renovate:latest
+            ghcr.io/${{ github.repository_owner }}/renovate:${{ github.sha }}-${{ matrix.platform }}
+
+  create-multiarch-manifests:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    needs:
+      - build-and-push-container
+    steps:
+      - name: Log in to the ghcr.io registry
+        uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Log in to the docker.io registry
+        uses: docker/login-action@v4
+        with:
+          registry: docker.io
+          username: voxpupulibot
+          password: ${{ secrets.DOCKERHUB_BOT_ADMIN_TOKEN }}
+
+      - name: Create multiarch manifests
+        run: |
+          docker buildx imagetools create -t ghcr.io/${{ github.repository_owner }}/renovate:latest \
+            ghcr.io/${{ github.repository_owner }}/renovate:${{ github.sha }}-arm64 \
+            ghcr.io/${{ github.repository_owner }}/renovate:${{ github.sha }}-amd64
+
+          docker buildx imagetools create -t docker.io/${{ github.repository_owner }}/renovate:latest \
+            ghcr.io/${{ github.repository_owner }}/renovate:${{ github.sha }}-arm64 \
+            ghcr.io/${{ github.repository_owner }}/renovate:${{ github.sha }}-amd64
+
+  update-dockerhub-description:
+    runs-on: ubuntu-latest
+    needs:
+      - create-multiarch-manifests
+    steps:
+      - name: Source checkout
+        uses: actions/checkout@v6
 
       - name: Update Docker Hub Description
         uses: peter-evans/dockerhub-description@v5