name: build

on:
  workflow_dispatch:

  push:
    branches:
      - 'master'

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
        # We are checking out explicitly, so build-push-action isn't trying
        # to checkout the (unreachable) submodule. (Using "context" there.)

      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      -
        name: Build
        uses: docker/build-push-action@v4
        with:
          context: .
          file: Dockerfile-core
          build-args:
            DRONE_COMMIT=${{ github.sha }}
          push: false