name: Build a Docker image

on:
  pull_request:
    branches:
      - master

jobs:
  build-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Build Docker image
        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
        with:
          context: .