name: Docker

on:
    - pull_request

jobs:
    build:
        name: Test Docker image build
        runs-on: ubuntu-20.04
        steps:
            - name: Checkout PR branch
              uses: actions/checkout@v2

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

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

            - name: Build
              id: docker_build
              uses: docker/build-push-action@v2
              with:
                  push: false
                  tags: posthog/posthog:latest

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