name: Multiplatform Docker build & push
on:
  push:
jobs:
  build:
    env:
      REGISTRY: ghcr.io
      IMAGENAME: ${{ github.event.repository.name }}
      TAG: ${{ github.ref_name }}
    runs-on: ubuntu-22.04
    steps:
      # see https://github.com/orgs/community/discussions/25678#discussioncomment-5242449
      - name: Delete huge unnecessary tools folder
        run: rm -rf /opt/hostedtoolcache
      - uses: actions/checkout@v4
        name: Check out code
      - name: Install Go
        uses: actions/setup-go@v5
        with:
          go-version-file: "./go.mod"
      - name: Run tests
        run: mkdir frontend/dist && touch frontend/dist/tmp && go test ./...
      - name: Docker build
        if: github.actor != 'dependabot[bot]'
        uses: mr-smithers-excellent/docker-build-push@v6
        id: build
        with:
          image: ${{ env.IMAGENAME }}
          registry: ${{ env.REGISTRY }}
          multiPlatform: true
          platform: linux/amd64,linux/arm64
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
          addLatest: ${{ startsWith(github.ref, 'refs/tags/v') }}
          buildArgs: TAG=${{ env.TAG }}