docker-publish-chisel.yml

name: Docker Build and Publish Chisel

# 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:
  schedule:
    - cron: '29 21 * * *'
  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_owner }}/syncoid-pull-server


jobs:
  build:

    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          - linux/arm/v6
          - linux/arm/v7
          - linux/arm64
    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@v3

      # 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@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 #v3.1.1
        with:
          cosign-release: 'v2.1.1'

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      # Set up BuildKit Docker container builder to be able to build
      # multi-platform images and export cache
      # https://github.com/docker/setup-buildx-action
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0

      # 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@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Clone Chisel Repo
        run: mkdir chisel; git clone https://github.com/jpillora/chisel.git ./chisel

      - name: Chisel Metadata
        id: chiselmeta
        shell: bash
        run: |
          cd chisel
          echo "CHISEL_VERSION_TAG<<TAGS" | awk '{print tolower($0)}' >>"$GITHUB_OUTPUT"
          echo "ghcr.io/${{ github.repository_owner }}/chisel:$(git describe --abbrev=0 --tags)" | awk '{print tolower($0)}' >>"$GITHUB_OUTPUT"
          echo "ghcr.io/${{ github.repository_owner }}/chisel:latest" | awk '{print tolower($0)}' >>"$GITHUB_OUTPUT"
          echo "TAGS" | awk '{print tolower($0)}' >>"$GITHUB_OUTPUT"

      # Extract metadata (tags, labels) for Docker
      # https://github.com/docker/metadata-action
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
        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 Chisel Docker image
        env:
          IMAGE_NAME: ${{ github.repository_owner }}/chisel
        id: build-and-push-chisel
        uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
        with:
          context: ./chisel/
          platforms: ${{ matrix.platform }}
          #file: ./chisel/Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.chiselmeta.outputs.CHISEL_VERSION_TAG }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      # Modify the Dockerfile to reference the recently built chisel image
      - name: Update Pull Client Dockerfile
        env:
          CHISEL_DIGEST: ${{ steps.build-and-push-chisel.outputs.digest }}
        run: |
          CHISEL_DIGEST=$(echo "${CHISEL_DIGEST}" | sed 's/^sha256:/sha256-/g' | awk '{print tolower($0)}')
          echo "ghcr.io/${{ github.repository_owner }}/chisel:${CHISEL_DIGEST}.sig"

      # 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
      #   env:
      #     IMAGE_NAME: ${{ github.repository_owner }}/syncoid-pull-client
      #   id: build-and-push-pull-client
      #   uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
      #   with:
      #     context: .
      #     file: ./pull-client/Dockerfile.syncoid-pull-client
      #     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

      # 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 Chisel Docker image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
          TAGS: ${{ steps.chiselmeta.outputs.CHISEL_VERSION_TAG }}
          DIGEST: ${{ steps.build-and-push-chisel.outputs.digest }}
        # This step uses the identity token to provision an ephemeral certificate
        # against the sigstore community Fulcio instance.
        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}