name: Containers

on:
  # This Workflow can be triggered manually
  workflow_dispatch:
  # Build new Spack develop containers nightly.
  schedule:
    - cron: '34 0 * * *'
  # Run on pull requests that modify this file
  pull_request:
    branches:
      - develop
    paths:
      - '.github/workflows/build-containers.yml'
      - 'share/spack/docker/*'
      - 'share/templates/container/*'
      - 'lib/spack/spack/container/*'
  # Let's also build & tag Spack containers on releases.
  release:
    types: [published]

jobs:
  deploy-images:
    runs-on: ubuntu-latest
    permissions:
      packages: write
    strategy:
      # Even if one container fails to build we still want the others
      # to continue their builds.
      fail-fast: false
      # A matrix of Dockerfile paths, associated tags, and which architectures
      # they support.
      matrix:
        # Meaning of the various items in the matrix list
        # 0: Container name (e.g. ubuntu-bionic)
        # 1: Platforms to build for
        # 2: Base image (e.g. ubuntu:18.04)
        dockerfile: [[amazon-linux, 'linux/amd64,linux/arm64', 'amazonlinux:2'],
                     [centos7, 'linux/amd64,linux/arm64,linux/ppc64le', 'centos:7'],
                     [centos-stream, 'linux/amd64,linux/arm64,linux/ppc64le', 'centos:stream'],
                     [leap15, 'linux/amd64,linux/arm64,linux/ppc64le', 'opensuse/leap:15'],
                     [ubuntu-bionic, 'linux/amd64,linux/arm64,linux/ppc64le', 'ubuntu:18.04'],
                     [ubuntu-focal, 'linux/amd64,linux/arm64,linux/ppc64le', 'ubuntu:20.04'],
                     [ubuntu-jammy, 'linux/amd64,linux/arm64,linux/ppc64le', 'ubuntu:22.04']]
    name: Build ${{ matrix.dockerfile[0] }}
    if: github.repository == 'spack/spack'
    steps:
      - name: Checkout
        uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # @v2

      - name: Set Container Tag Normal (Nightly)
        run: |
          container="${{ matrix.dockerfile[0] }}:latest"
          echo "container=${container}" >> $GITHUB_ENV
          echo "versioned=${container}" >> $GITHUB_ENV

        # On a new release create a container with the same tag as the release.
      - name: Set Container Tag on Release
        if: github.event_name == 'release'
        run: |
          versioned="${{matrix.dockerfile[0]}}:${GITHUB_REF##*/}"
          echo "versioned=${versioned}" >> $GITHUB_ENV

      - name: Generate the Dockerfile
        env:
          SPACK_YAML_OS: "${{ matrix.dockerfile[2] }}"
        run: |
          .github/workflows/generate_spack_yaml_containerize.sh
          . share/spack/setup-env.sh
          mkdir -p dockerfiles/${{ matrix.dockerfile[0] }}
          spack containerize --last-stage=bootstrap | tee dockerfiles/${{ matrix.dockerfile[0] }}/Dockerfile
          printf "Preparing to build ${{ env.container }} from dockerfiles/${{ matrix.dockerfile[0] }}/Dockerfile"
          if [ ! -f "dockerfiles/${{ matrix.dockerfile[0] }}/Dockerfile" ]; then
              printf "dockerfiles/${{ matrix.dockerfile[0] }}/Dockerfile does not exist"
              exit 1;
          fi

      - name: Upload Dockerfile
        uses: actions/upload-artifact@3cea5372237819ed00197afe530f5a7ea3e805c8
        with:
          name: dockerfiles
          path: dockerfiles

      - name: Set up QEMU
        uses: docker/setup-qemu-action@8b122486cedac8393e77aa9734c3528886e4a1a8 # @v1

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@dc7b9719a96d48369863986a06765841d7ea23f6 # @v1

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@49ed152c8eca782a232dede0303416e8f356c37b # @v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Log in to DockerHub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@49ed152c8eca782a232dede0303416e8f356c37b # @v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build & Deploy ${{ matrix.dockerfile[0] }}
        uses: docker/build-push-action@e551b19e49efd4e98792db7592c17c09b89db8d8 # @v2
        with:
          context: dockerfiles/${{ matrix.dockerfile[0] }}
          platforms: ${{ matrix.dockerfile[1] }}
          push: ${{ github.event_name != 'pull_request' }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          tags: |
            spack/${{ env.container }}
            spack/${{ env.versioned }}
            ghcr.io/spack/${{ env.container }}
            ghcr.io/spack/${{ env.versioned }}