build.yml

name: Build

on:
  push:
    branches: [ master ]
    tags:
      - 'v[0-9]+.[0-9]+.[0-9]+*'
  pull_request:
    branches: [ master ]

jobs:
  build:
    name: Build
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v4
      - name: Install rye
        uses: eifinger/setup-rye@d4c3ac7b15d8bf2e0b45e2d257c6b5cdbebc3643  # v4.2.1
        with:
          version: '0.36.0'
          enable-cache: true
          cache-prefix: ${{ github.workflow }}
      - name: Decide image tags
        id: info
        shell: python
        run: |
          import os
          import itertools

          registries = ['docker.io', 'ghcr.io']
          repos = ['${{ github.repository }}'.lower()]
          if '${{ github.ref_type }}' == 'branch':
              tags = ['latest']
          elif '${{ github.ref_type }}' == 'tag':
              version = '${{ github.ref_name }}'[1:]
              tags = ['latest', version]
          else:
              tags = []
  
          def join_tag(t):
              registry, repo, tag = t
              return f'{registry}/{repo}:{tag}'

          product = itertools.product(registries, repos, tags)
          tags_csv = ','.join(map(join_tag, product))
          push = 'true' if len(tags) >= 2 else 'false'

          with open(os.environ['GITHUB_OUTPUT'], 'a') as out:
              out.write(f'tags={tags_csv}\n')
              out.write(f'push={push}\n')
      - name: Set version
        run: |
          if [ '${{ github.ref_type }}' = 'tag' ]; then
            rye version '${{ github.ref_name }}'
          else
            commit='${{ github.sha }}'
            rye version "0.0.0.dev1+commit.${commit:0:7}"
          fi
          rye version > src/chrisomatic/version.txt
      - name: Build Python wheel
        run: rye build --wheel --clean
      - uses: docker/setup-buildx-action@v3
      - name: Login to DockerHub
        if: github.event_name == 'push'
        id: dockerhub_login
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}
      - name: Login to GitHub Container Registry
        if: github.event_name == 'push'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build image
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/ppc64le,linux/arm64
          tags: ${{ steps.info.outputs.tags }}
          push: ${{ steps.info.outputs.push }}
      - name: Update DockerHub description
        uses: peter-evans/dockerhub-description@v4
        if: ${{ steps.info.outputs.push }}
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}
          short-description: ${{ github.event.repository.description }}