# Build docker image
# Always builds by default
# Only pushes to registry if:
# * is not a pull request
# * is master branch
#   * tag as 'latest'
# * is the result of release
#   * tag with release name

name: Build docker

on:
  release:
    types: [released]
  push:
    branches:
      - 'main'
  pull_request:

jobs:
  build-docker:
    name: Build Docker image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Login to Github Registry
        uses: docker/login-action@v1
        if: github.event_name == 'push'
        with:
          registry: ghrc.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build image
        uses: docker/build-push-action@v2
        id: docker_build
        with:
          file: Tools/setup/Dockerfile
          push: github.event_name != 'pull_request'
          tags: px4io/px4-dev:${{ github.event_name == 'push' && github.event.release.name || 'latest' }}

      - name: Push to Github Registry
        uses: docker/build-push-action@v2
        if: github.event_name == 'push'

      - name: Image Digest
        run: echo ${{ steps.docker_build.outputs.digest }}