name: CI build Docker
# https://www.docker.com/blog/first-docker-github-action-is-here
# https://github.com/docker/build-push-action
# see: https://help.github.com/en/actions/reference/events-that-trigger-workflows
on:  # Trigger the workflow on push or pull request, but only for the master branch
  push:
    branches: [master]
  pull_request:
    branches: [master]

jobs:
  build-Conda:
    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false
      matrix:
        python_version: [3.6]
        pytorch_version: [1.3, 1.7]
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      # https://github.com/docker/setup-buildx-action
      # to use cache-from and cache-to argument of buildx command
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Build Conda Docker
        # publish master
        uses: docker/build-push-action@v2
        with:
          build-args: |
            PYTHON_VERSION=${{ matrix.python_version }}
            PYTORCH_VERSION=${{ matrix.pytorch_version }}
          file: dockers/conda/Dockerfile
          push: false
        timeout-minutes: 50

  build-XLA:
    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false
      matrix:
        python_version: [3.7]
        xla_version: [1.6]  # todo: , "nightly"
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      # https://github.com/docker/setup-buildx-action
      # to use cache-from and cache-to argument of buildx command
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Build XLA Docker
        # publish master
        uses: docker/build-push-action@v2
        with:
          build-args: |
            PYTHON_VERSION=${{ matrix.python_version }}
            XLA_VERSION=${{ matrix.xla_version }}
          cache-from: pytorchlightning/pytorch_lightning:base-xla-cache-py${{ matrix.python_version }}-torch${{ matrix.xla_version }}
          file: dockers/base-xla/Dockerfile
          push: false
        timeout-minutes: 50

  build-cuda:
    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false
      matrix:
        include:
          #- python_version: 3.7
          #  pytorch_version: 1.8  # todo
          #  pytorch_channel: pytorch-nightly
          - python_version: 3.8
            pytorch_version: 1.6
            pytorch_channel: pytorch
          - python_version: 3.6
            pytorch_version: 1.5
            pytorch_channel: pytorch
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      # https://github.com/docker/setup-buildx-action
      # to use cache-from and cache-to argument of buildx command
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Build CUDA Docker
        # publish master
        uses: docker/build-push-action@v2
        with:
          build-args: |
            PYTHON_VERSION=${{ matrix.python_version }}
            PYTORCH_VERSION=${{ matrix.pytorch_version }}
            PYTORCH_CHANNEL=${{ matrix.pytorch_channel }}
          cache-from: pytorchlightning/pytorch_lightning:base-cuda-cache-py${{ matrix.python_version }}-torch${{ matrix.pytorch_version }}
          file: dockers/base-cuda/Dockerfile
          push: false
        timeout-minutes: 50