docker.yml

name: Docker

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

on:
  push:
    branches: ["main"]
    # Publish semver tags as releases.
    tags: ["v*.*.*"]
  pull_request:
    branches: ["main"]

env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: ghcr.io
  # github.repository as <account>/<repo>
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      # This is used to complete the identity challenge
      # with sigstore/fulcio when running outside of PRs.
      id-token: write

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

      - uses: actions/setup-node@v3
        with:
          node-version: 18

      - name: Install node dependencies
        run: npm install

      - id: version
        name: Determine version
        run: |
          version="$(./scripts/version)"
          echo "version=$version" >> $GITHUB_OUTPUT

      # # Install the cosign tool except on PR
      # # https://github.com/sigstore/cosign-installer
      # - name: Install cosign
      #   if: github.event_name != 'pull_request'
      #   uses: sigstore/cosign-installer@f3c664df7af409cb4873aa5068053ba9d61a57b6 #v2.6.0
      #   with:
      #     cosign-release: "v1.13.1"

      # Workaround: https://github.com/docker/build-push-action/issues/461
      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@460e45646ded27e46146cedd75d922e7fd9ef69f

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into registry ${{ env.REGISTRY }}
        uses: docker/login-action@1f36f5b7a2d2f7bfd524795fc966e6d88c37baa9
        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@70b2cdc6480c1a8b86edf1777157f8f437de2166
        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@4f58ea79222b3b9dc2c8bbdd6debcef730109a75
        with:
          context: .
          push: true
          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.version.outputs.version }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      # # Sign the resulting Docker image digest except on PRs.
      # # This will only write to the public Rekor transparency log when the Docker
      # # repository is public to avoid leaking data.  If you would like to publish
      # # transparency data even for private images, pass --force to cosign below.
      # # https://github.com/sigstore/cosign
      # - name: Sign the published Docker image
      #   if: ${{ github.event_name != 'pull_request' }}
      #   env:
      #     COSIGN_EXPERIMENTAL: "true"
      #   # This step uses the identity token to provision an ephemeral certificate
      #   # against the sigstore community Fulcio instance.
      #   run: echo "${{ steps.meta.outputs.tags }}" | xargs -I {} cosign sign {}@${{ steps.build-and-push.outputs.digest }}