feat(docker): Add GHCR workflow for backend and frontend package releases

.github/workflows/docker-release.yml

@@ -0,0 +1,58 @@
+name: Docker Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  publish-images:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - image_name: multica-backend
+            dockerfile: Dockerfile
+          - image_name: multica-frontend
+            dockerfile: Dockerfile.web
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository_owner }}/${{ matrix.image_name }}
+          flavor: |
+            latest=true
+          tags: |
+            type=semver,pattern={{version}}
+
+      - name: Build and push ${{ matrix.image_name }}
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ${{ matrix.dockerfile }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64