domjudge-packaging/.github/workflows/build-contributor-container-PR.yml at main · DOMjudge/domjudge-packaging · GitHub

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name: 'Build Contributor container (PR)'
# For speedup to do this in parallel: https://docs.docker.com/build/ci/github-actions/multi-platform/
# Loosely based on: https://docs.docker.com/build/ci/github-actions/push-multi-registries/

on:
  merge_group:
    # We can't limit the files as below as this is a required check so should run
    # We exit early in case no relevant file changed
    types: [checks_requested]
  pull_request:
    branches:
      - main
  push:
    # We don't start the job if no relevant file changed
    paths:
      # This is an `either`, so any file listed here will trigger
      - docker-contributor/**
      - .github/workflows/build-contributor-container-PR.yml

jobs:
  pr-contributor:
    name: PR Contributor image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Detect changed files and compute condition
        id: filter
        uses: ./.github/actions/helper-detect-changed-files
        with:
          trigger-files: "docker-contributor .github/workflows/build-contributor-container-PR"

      - name: Mark as skipped
        if: steps.filter.outputs.should_run == 'false'
        run: echo "Skip job, no important files changed"

      - name: Set up QEMU
        if: steps.filter.outputs.should_run == 'true'
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        if: steps.filter.outputs.should_run == 'true'
        uses: docker/setup-buildx-action@v4

      - name: Login to GitHub container registry
        if: steps.filter.outputs.should_run == 'true'
        uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        if: steps.filter.outputs.should_run == 'true'
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: ghcr.io/${{ github.repository }}

      - name: Build and push
        if: steps.filter.outputs.should_run == 'true'
        uses: docker/build-push-action@v7
        with:
          context: docker-contributor
          platforms: linux/amd64,linux/arm64
          push: false
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}