feat: add MariaDB backup jobs with multi-architecture support and Docker configurations

.github/workflows/build-release.yml

@@ -166,3 +166,55 @@ jobs:
             quickstack/job-backup-postgres:latest-amd64 \
             quickstack/job-backup-postgres:latest-arm64
           docker buildx imagetools inspect quickstack/job-backup-postgres:latest
+
+  build-and-push-mariadb-backup:
+    runs-on: ubuntu-latest
+    needs: test
+    if: ${{ needs.test.result == 'success' }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          registry: docker.io
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build and Push MariaDB Backup (amd64)
+        uses: docker/build-push-action@v4
+        with:
+          context: ./additional-containers/mariadb-backup
+          file: ./additional-containers/mariadb-backup/Dockerfile.amd64
+          push: true
+          platforms: linux/amd64
+          build-args: |
+            VERSION_ARG=${{ github.ref_name }}
+          tags: |
+            quickstack/job-backup-mariadb:latest-amd64
+
+      - name: Build and Push MariaDB Backup (arm64)
+        uses: docker/build-push-action@v4
+        with:
+          context: ./additional-containers/mariadb-backup
+          file: ./additional-containers/mariadb-backup/Dockerfile.arm64
+          push: true
+          platforms: linux/arm64
+          build-args: |
+            VERSION_ARG=${{ github.ref_name }}
+          tags: |
+            quickstack/job-backup-mariadb:latest-arm64
+
+      - name: Create multi-arch manifest (latest)
+        run: |
+          docker buildx imagetools create -t quickstack/job-backup-mariadb:latest \
+            quickstack/job-backup-mariadb:latest-amd64 \
+            quickstack/job-backup-mariadb:latest-arm64
+          docker buildx imagetools inspect quickstack/job-backup-mariadb:latest

.github/workflows/canary-release.yml

@@ -128,3 +128,36 @@ jobs:
             VERSION_ARG=canary-${{ github.run_number }}
           tags: |
             quickstack/job-backup-postgres:canary
+
+  build-and-push-mariadb-backup:
+    runs-on: ubuntu-latest
+    needs: test
+    if: ${{ needs.test.result == 'success' }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          registry: docker.io
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build and Push MariaDB Backup (amd64)
+        uses: docker/build-push-action@v4
+        with:
+          context: ./additional-containers/mariadb-backup
+          file: ./additional-containers/mariadb-backup/Dockerfile.amd64
+          push: true
+          platforms: linux/amd64
+          build-args: |
+            VERSION_ARG=canary-${{ github.run_number }}
+          tags: |
+            quickstack/job-backup-mariadb:canary