zensical/.github/workflows/docker.yml

# Copyright (c) 2025-2026 Zensical and contributors

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name: Docker

on:
  pull_request:
    types:
      - closed
    branches:
      - master

jobs:
  docker:
    name: Build and push
    if: |
      github.event.pull_request.merged == true &&
      startsWith(github.event.pull_request.head.ref, 'release/')
    runs-on: ubuntu-latest
    env:
      IMAGE: ${{ github.event.repository.full_name }}
      DOCKER_BUILDKIT: 1
      DOCKER_BUILD_SUMMARY: false
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          ref: ${{ inputs.ref || github.sha }}

      - name: Determine version
        id: version
        run: |
          BRANCH="${{ github.event.pull_request.head.ref }}"
          VERSION=${BRANCH#release/}
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4

      - name: Set up Buildx
        uses: docker/setup-buildx-action@v4

      - name: Login to DockerHub
        uses: docker/login-action@v4
        with:
          username: zensical
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Generate tags and labels
        id: meta
        uses: docker/metadata-action@v6
        env:
          VERSION: ${{ steps.version.outputs.version }}
        with:
          images: ${{ env.IMAGE }}
          tags: |
            type=semver,value=${{ env.VERSION }},pattern={{version}}
            type=semver,value=${{ env.VERSION }},pattern={{major}}.{{minor}}
            type=semver,value=${{ env.VERSION }},pattern={{major}}
            type=ref,event=pr
          labels: |
            org.opencontainers.image.title=Zensical
            org.opencontainers.image.description=A modern static site generator
            org.opencontainers.image.documentation=https://zensical.org/docs/
            org.opencontainers.image.url=https://zensical.org
            org.opencontainers.image.vendor=Zensical
            org.opencontainers.image.version=${{ env.VERSION }}
            org.opencontainers.image.licenses=MIT

      - name: Prepare build
        run: python scripts/prepare.py

      - name: Build image
        uses: docker/build-push-action@v7
        with:
          context: .
          load: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            VERSION=${{ steps.meta.outputs.version }}

      - name: Check image
        working-directory: /tmp
        env:
          VERSION: ${{ steps.meta.outputs.version }}
        run: |
          docker run --rm -i -v $PWD:/docs $IMAGE:$VERSION new .
          docker run --rm -i -v $PWD:/docs $IMAGE:$VERSION build

      - name: Build and push image
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: |
            linux/amd64
            linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Inspect manifest
        env:
          VERSION: ${{ steps.meta.outputs.version }}
        run: |
          docker buildx imagetools inspect $IMAGE:$VERSION

      - name: Inspect image
        env:
          VERSION: ${{ steps.meta.outputs.version }}
        run: |
          docker pull $IMAGE:$VERSION
          docker image inspect $IMAGE:$VERSION