docker-publish.yml

name: Docker Build and Publish

on:
  push:
    branches: [ main ]
    tags: [ 'v*.*.*' ]
  pull_request:
    branches: [ main ]
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  # github.repository_owner is automatically converted to lowercase
  IMAGE_NAME: ${{ github.repository_owner }}/pygeoapi-map

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write
      security-events: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@v3.3.0

      - 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 the Container registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set lowercase image name
        run: |
          echo "IMAGE_NAME_LOWER=${IMAGE_NAME,,}" >> $GITHUB_ENV
        env:
          IMAGE_NAME: ${{ env.IMAGE_NAME }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME_LOWER }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha

      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/amd64,linux/arm64
          cache-from: type=gha
          cache-to: type=gha,mode=max

      # Sign the resulting Docker image digest except on PRs
      - name: Sign the published Docker image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          # This step uses the identity token to provision an ephemeral certificate
          COSIGN_EXPERIMENTAL: "true"
        run: |
          IMAGE_NAME_LOWER=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')
          DIGEST="${{ steps.build-and-push.outputs.digest }}"
          cosign sign --yes "${{ env.REGISTRY }}/${IMAGE_NAME_LOWER}@${DIGEST}"

      # Run Trivy vulnerability scanner
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        if: ${{ github.event_name != 'pull_request' }}
        with:
          image-ref: '${{ env.REGISTRY }}/${{ env.IMAGE_NAME_LOWER }}:${{ env.DOCKER_METADATA_OUTPUT_VERSION }}'
          format: 'sarif'
          output: 'trivy-results.sarif'
          timeout: '10m'
          ignore-unfixed: true

      # Upload Trivy scan results to GitHub Security tab
      - name: Upload Trivy scan results to GitHub Security tab
        if: ${{ github.event_name != 'pull_request' && always() }}
        uses: github/codeql-action/upload-sarif@v3
        with:
          sarif_file: 'trivy-results.sarif'
          category: 'Trivy'