docker_release.yml

name: Docker Release

# 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: "22 21 * * *"
  release:
    types: [published, prereleased, released]
env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: ghcr.io
  # REGISTRY2: docker.com
  # github.repository as <account>/<repo>
  IMAGE_NAME: ${{ github.repository }}
  COMPARE_TAG: latest

jobs:
  build:
    if: github.event_name == 'release'
    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

      # 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@v3.7.0 # v3.1.1
        with:
          cosign-release: "v2.2.4"

      # 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@v3.7.1 # v3.6.1

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into registry ${{ env.REGISTRY }}
        uses: docker/login-action@v3.0.0 # v3.0.0
        if: ${{ github.event_name != 'pull_request' }}
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        if: ${{ github.event_name != 'pull_request' }}
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # Extract metadata (tags, labels) for Docker
      # https://github.com/docker/metadata-action

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@369eb591f429131d6889c46b94e711f089e6ca96 # v5.6.1
        with:
          images: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          # ${{ env.REGISTRY2 }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=ref,event=branch
            type=ref,event=pr
      # 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
        if: ${{ github.event_name != 'pull_request' }}
        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Extract Docker metadata
        id: meta2
        uses: docker/metadata-action@v5.6.1
        with:
          images: ${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}

      # 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 to Docker Hub
        id: build-and-push-docker
        uses: docker/build-push-action@v6.9.0
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta2.outputs.tags }}
          labels: ${{ steps.meta2.outputs.labels }}
          provenance: mode=max

      - name: Docker Scout
        id: docker-scout
        if: ${{ github.event_name == 'pull_request' }}
        uses: docker/scout-action@v1
        with:
          command: cves, recommendations, sbom
          image: ${{ steps.meta.outputs.tags }}
          ignore-unchanged: true
          only-severities: critical,high
          write-comment: true
          github-token: ${{ secrets.GITHUB_TOKEN }} # to be able to write the comment

      # 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:
          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
          TAGS: ${{ steps.meta.outputs.tags }}
          DIGEST: ${{ steps.build-and-push.outputs.digest }}
        # This step uses the identity token to provision an ephemeral certificate
        # against the sigstore community Fulcio instance.
        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}
      
      
      - name: Sign the published Docker image on Docker hub
        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.meta.outputs.tags }}
          DIGEST: ${{ steps.build-and-push-docker.outputs.digest }}
        # This step uses the identity token to provision an ephemeral certificate
        # against the sigstore community Fulcio instance.
        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}