build-ci.yml

name: Create Docker image for CI

on:
  push:
    branches: ['master']

jobs:
  build:
    if: github.repository_owner == 'sphinx-doc'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf  # v3.2.0
      - uses: docker/setup-buildx-action@988b5a0280414f521da01fcc63a27aeeb4b104db  # v3.6.1
      - name: Log in to Docker Hub
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567  # v3.3.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Log in to GitHub Container Registry
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567  # v3.3.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81  # v5.5.1
        with:
          images: |
            sphinxdoc/docker-ci
            ghcr.io/sphinx-doc/sphinx-ci
          tags: |
            type=schedule,pattern={{date 'YYYY-MM-DD'}}
            type=raw,value=latest,enable={{is_default_branch}}
      - name: Build and push Docker image
        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75  # v6.9.0
        with:
          context: ci
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}