docker-release.yml

---
name: Docker Release

on:
  release:
    types: [published]

permissions: {}

env:
  DOCKER_BUILDKIT: 1

jobs:
  docker-release:
    if: startsWith(github.ref, 'refs/tags/')
    permissions:
      # Required to checkout the code
      contents: read
      # Required to sign the Docker image
      id-token: write
    runs-on: ubuntu-latest
    steps:
      - name: Set IMAGE
        shell: bash
        run: |
          set -euo pipefail
          IFS=$'\n\t'	
          echo "IMAGE=${GITHUB_REPOSITORY#*/docker-}" >> "${GITHUB_ENV}"
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 1
          persist-credentials: false
      - name: Set SOURCE_DATE_EPOCH
        run: |
          set -euo pipefail
          IFS=$'\n\t'	
          echo "SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct)" >> "${GITHUB_ENV}"
      - uses: sigstore/cosign-installer@cad07c2e89fa2edd6e2d7bab4c1aa38e53f76003 # v4.1.1
      - uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4.0.0
      - uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
      - uses: docker/metadata-action@030e881283bb7a6894de51c315a6bfe6a94e05cf # v6.0.0
        id: meta
        with:
          images: ${{ github.repository_owner }}/${{ env.IMAGE }}
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha
      - uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7.1.0
        id: build
        with:
          # zizmor: ignore[template-injection] no user input
          context: ${{ env.IMAGE }}
          platforms: linux/amd64,linux/arm64
          pull: true
          push: true
          sbom: true
          provenance: mode=max
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
      - name: Sign the Docker image
        working-directory: ${{ env.IMAGE }}
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
          TAGS: ${{ steps.meta.outputs.tags }}
        shell: bash
        run: |
          set -euo pipefail
          IFS=$'\n\t'
          images=()
          for tag in ${TAGS}; do
            images+=("${tag}@${DIGEST}")
          done
          cosign sign --recursive --yes "${images[@]}"