Sourcery/.github/workflows/docker.yml at f9d80ddec1d42b83b776064162ce0a93a0289334 · krzysztofzablocki/Sourcery · GitHub

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name: Docker

permissions:
  contents: read
  packages: write

on:
  push:
    branches:
      - master
    tags:
      - '*'

# https://docs.docker.com/build/ci/github-actions/multi-platform/#distribute-build-across-multiple-runners
jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-24.04
            platform: linux-amd64
          - os: ubuntu-24.04-arm
            platform: linux-arm64
    runs-on: ${{ matrix.os }}
    steps:
    - name: Set lowercase repository name
      run: |
        echo "REPOSITORY_LC=${REPOSITORY,,}" >>${GITHUB_ENV}
      env:
        REPOSITORY: '${{ github.repository }}'

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3

    - name: Login to GitHub registry
      uses: docker/login-action@v3
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - uses: docker/build-push-action@v6
      id: build
      with:
        tags: ghcr.io/${{ env.REPOSITORY_LC }}
        outputs: type=image,push-by-digest=true,name-canonical=true,push=true

    - name: Export digest
      run: |
        mkdir -p ${{ runner.temp }}/digests
        digest="${{ steps.build.outputs.digest }}"
        touch "${{ runner.temp }}/digests/${digest#sha256:}"

    - name: Upload digest
      uses: actions/upload-artifact@v4
      with:
        name: digests-${{ matrix.platform }}
        path: ${{ runner.temp }}/digests/*
        if-no-files-found: error
        retention-days: 1

  merge:
    runs-on: ubuntu-24.04
    needs: build
    steps:
    - name: Set lowercase repository name
      run: |
        echo "REPOSITORY_LC=${REPOSITORY,,}" >>${GITHUB_ENV}
      env:
        REPOSITORY: '${{ github.repository }}'

    - name: Download digests
      uses: actions/download-artifact@v4
      with:
        path: ${{ runner.temp }}/digests
        pattern: digests-*
        merge-multiple: true

    - name: Login to GitHub registry
      uses: docker/login-action@v3
      with:
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
        registry: ghcr.io

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3

    - name: Docker meta
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ghcr.io/${{ env.REPOSITORY_LC }}

    - name: Create manifest list and push
      working-directory: ${{ runner.temp }}/digests
      run: |
        docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
          $(printf 'ghcr.io/${{ env.REPOSITORY_LC }}@sha256:%s ' *)

    - name: Inspect image
      run: |
        docker buildx imagetools inspect ghcr.io/${{ env.REPOSITORY_LC }}:${{ steps.meta.outputs.version }}