feat: dockerfile & ci

.github/workflows/docker.yml

@@ -0,0 +1,76 @@
+name: Docker
+
+on:
+  push:
+    branches: [ "main" ]
+    tags: [ '*' ]
+    paths-ignore:
+      - 'LICENSE'
+      - 'README.md'
+      - 'config.example.yaml'
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  # Publish to GitHub Container Registry
+  publish-ghcr:
+    runs-on: ubuntu-latest
+
+    name: Docker release to GitHub Container Registry
+
+    strategy:
+      matrix:
+        component:
+          - main
+          - generator
+
+    env:
+      REGISTRY: ghcr.io
+      IMAGE_NAME: ${{ github.repository }}-${{ matrix.component }}
+
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      # Workaround: https://github.com/docker/build-push-action/issues/461
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Login against a Docker registry except on PR
+      # https://github.com/docker/login-action
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: docker/application/Dockerfile
+          build-args:
+            - COMPONENT=${{ matrix.component }}
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

docker/application/Dockerfile

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+FROM golang:1.21 AS builder
+ARG COMPONENT=main
+
+WORKDIR /go/src/app
+
+# Install dependencies
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the app
+RUN make build-${COMPONENT}
+
+FROM alpine AS runner
+ARG COMPONENT=main
+
+WORKDIR /app
+
+# Copy the binary from the build stage
+COPY --from=builder /go/src/app/bin/${COMPONENT} ./application
+
+# Run the binary
+ENTRYPOINT ["./application"]