release-docker.yml

name: Release Docker

on:
  workflow_call:
    inputs:
      context:
        description: "Docker build context directory (e.g., ballerina-interpreter)"
        required: true
        type: string
      image_name:
        description: "Docker image name without registry prefix (e.g., afm-ballerina-interpreter)"
        required: true
        type: string
      version:
        description: "Release version (e.g., 0.1.0)"
        required: true
        type: string
      branch:
        description: "Branch being released from"
        required: true
        type: string
      image_title:
        description: "Human-readable image title for OCI labels (e.g., AFM Ballerina Interpreter)"
        required: true
        type: string
      build_slim:
        description: "Whether to build and push a slim image variant"
        required: false
        default: false
        type: boolean

jobs:
  docker:
    runs-on: ubuntu-latest
    permissions:
      packages: write
      security-events: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.branch }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Determine Docker tags
        id: docker-tags
        env:
          OWNER: ${{ github.repository_owner }}
          IMAGE_NAME: ${{ inputs.image_name }}
          VERSION: ${{ inputs.version }}
          UPDATE_LATEST: ${{ inputs.branch == 'main' || inputs.branch == 'dev' }}
        run: |
          # GHCR requires lowercase repository names
          OWNER_LOWER=$(echo "$OWNER" | tr '[:upper:]' '[:lower:]')
          BASE_IMAGE="ghcr.io/$OWNER_LOWER/$IMAGE_NAME"
          TAGS_FULL="$BASE_IMAGE:v$VERSION"
          [ "$UPDATE_LATEST" = "true" ] && TAGS_FULL="$TAGS_FULL,$BASE_IMAGE:latest"
          echo "TAGS_FULL=$TAGS_FULL" >> $GITHUB_OUTPUT

          TAGS_SLIM="$BASE_IMAGE:v$VERSION-slim"
          [ "$UPDATE_LATEST" = "true" ] && TAGS_SLIM="$TAGS_SLIM,$BASE_IMAGE:slim"
          echo "TAGS_SLIM=$TAGS_SLIM" >> $GITHUB_OUTPUT
          echo "BASE_IMAGE=$BASE_IMAGE" >> $GITHUB_OUTPUT

      - name: Build and push full image
        uses: docker/build-push-action@v5
        with:
          context: ${{ inputs.context }}
          push: true
          platforms: linux/amd64,linux/arm64
          build-args: VARIANT=full
          tags: ${{ steps.docker-tags.outputs.TAGS_FULL }}
          labels: |
            org.opencontainers.image.source=https://github.com/${{ github.repository }}
            org.opencontainers.image.version=${{ inputs.version }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.title=${{ inputs.image_title }}
            org.opencontainers.image.licenses=Apache-2.0
          annotations: |
            index:org.opencontainers.image.source=https://github.com/${{ github.repository }}
            index:org.opencontainers.image.licenses=Apache-2.0

      - name: Build and push slim image
        if: ${{ inputs.build_slim }}
        uses: docker/build-push-action@v5
        with:
          context: ${{ inputs.context }}
          push: true
          platforms: linux/amd64,linux/arm64
          build-args: VARIANT=slim
          tags: ${{ steps.docker-tags.outputs.TAGS_SLIM }}
          labels: |
            org.opencontainers.image.source=https://github.com/${{ github.repository }}
            org.opencontainers.image.version=${{ inputs.version }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.title=${{ inputs.image_title }} (Slim)
            org.opencontainers.image.licenses=Apache-2.0
          annotations: |
            index:org.opencontainers.image.source=https://github.com/${{ github.repository }}
            index:org.opencontainers.image.licenses=Apache-2.0

      - name: Scan full Docker image for vulnerabilities
        uses: aquasecurity/trivy-action@0.34.0
        with:
          image-ref: ${{ steps.docker-tags.outputs.BASE_IMAGE }}:v${{ inputs.version }}
          format: "sarif"
          output: "trivy-results-full.sarif"
          severity: "CRITICAL,HIGH"
          limit-severities-for-sarif: true
          exit-code: "1"

      - name: Upload full image Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v4
        if: always()
        with:
          sarif_file: "trivy-results-full.sarif"
          category: "trivy-full-${{ inputs.image_name }}"

      - name: Scan slim Docker image for vulnerabilities
        if: ${{ always() && inputs.build_slim }}
        uses: aquasecurity/trivy-action@0.34.0
        with:
          image-ref: ${{ steps.docker-tags.outputs.BASE_IMAGE }}:v${{ inputs.version }}-slim
          format: "sarif"
          output: "trivy-results-slim.sarif"
          severity: "CRITICAL,HIGH"
          limit-severities-for-sarif: true
          exit-code: "1"

      - name: Upload slim image Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v4
        if: ${{ always() && inputs.build_slim }}
        with:
          sarif_file: "trivy-results-slim.sarif"
          category: "trivy-slim-${{ inputs.image_name }}"