containers.yaml

name: Containers

on:
  push:
    branches:
      - main
    paths:
      - 'dockerfiles/**'

  pull_request:
    branches:
      - main
    paths:
      - 'dockerfiles/**'

concurrency:
  group: ${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:
  detect-changes:
    runs-on: ubuntu-latest
    name: Detect changes to Dockerfiles
    permissions:
      pull-requests: read
    outputs:
      modified_files_count: ${{ steps.changed-files.outputs.modified_files_count }}
      other_modified_files_count: ${{ steps.changed-files.outputs.other_modified_files_count }}
      directories: ${{ steps.format.outputs.directories }}
    steps:
      - uses: actions/checkout@v3
      - name: Detect changed files
        id: changed-files
        uses: tj-actions/changed-files@v37
        with:
          path: dockerfiles
          dir_names: true
          dir_names_max_depth: 1
          dir_names_exclude_current_dir: true
          files: minimal-notebook/**
      - id: format
        run: |
          echo "${{ steps.changed-files.outputs.other_modified_files }}" | python -c "import sys,json;d=json.dumps({'directories': sys.stdin.read().strip().split(' ')});print(f'directories={d}')" >> $GITHUB_OUTPUT

  build-base-container:
    if: needs.detect-changes.outputs.modified_files_count > 0
    needs:
      - detect-changes
    runs-on: ubuntu-latest
    name: Build base container
    permissions:
      packages: write
    steps:
      - uses: actions/checkout@v3
      - uses: docker/setup-buildx-action@v2
      - uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - uses: actions/setup-python@v4
        with:
          python-version: '3.9'
      - id: get-version
        run: |
          pip install tbump
          pushd dockerfiles/minimal-notebook
          echo "version=$(tbump current-version)" >> $GITHUB_OUTPUT
      - uses: docker/build-push-action@v4
        if: github.event_name == 'pull_request'
        with:
          cache-from: type=gha
          cache-to: type=gha,mode=max
          context: dockerfiles/minimal-notebook
          pull: true
          push: true
          tags: ghcr.io/esgf-nimbus/minimal-notebook:cache
      - uses: docker/build-push-action@v4
        if: github.event_name == 'push'
        with:
          cache-from: type=gha
          cache-to: type=gha,mode=max
          context: dockerfiles/minimal-notebook
          pull: true
          push: true
          tags: ghcr.io/esgf-nimbus/minimal-notebook:${{ steps.get-version.outputs.version }}

  build-other-containers:
    if: always() && needs.detect-changes.outputs.other_modified_files_count > 0
    needs:
      - detect-changes
      - build-base-container
    runs-on: ubuntu-latest
    name: Build other containers
    permissions:
      packages: write
    strategy:
      matrix: ${{ fromJSON(needs.detect-changes.outputs.directories) }}
    steps:
      - uses: actions/checkout@v3
      - uses: docker/setup-buildx-action@v2
      - uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - uses: actions/setup-python@v4
        with:
          python-version: '3.9'
      - id: get-version
        run: |
          pip install tbump
          pushd dockerfiles/${{ matrix.directories }}
          echo "version=$(tbump current-version)" >> $GITHUB_OUTPUT
      - uses: docker/build-push-action@v4
        if: github.event_name == 'pull_request'
        with:
          cache-from: type=gha
          cache-to: type=gha,mode=max
          context: dockerfiles/${{ matrix.directories }}
          build-args: ${{ (contains(matrix.directories, 'minimal-notebook') || contains(matrix.directories, 'nimbus')) && 'TAG=cache' || '' }}
          pull: true
          push: true
          tags: ghcr.io/esgf-nimbus/${{ matrix.directories }}:cache
      - uses: docker/build-push-action@v4
        if: github.event_name == 'push'
        with:
          cache-from: type=gha
          cache-to: type=gha,mode=max
          context: dockerfiles/${{ matrix.directories }}
          pull: true
          push: true
          tags: ghcr.io/esgf-nimbus/${{ matrix.directories }}:${{ steps.get-version.outputs.version }}