name: Build and publish Docker image

on:
  push:
    tags:
      - v*
  workflow_dispatch:

env:
  IMAGE_NAME: mhp

jobs:
  # Push image to GitHub Packages.
  # See also https://docs.docker.com/docker-hub/builds/
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/setup-node@v3
      - uses: actions/checkout@v3
      - run: yarn install --frozen-lockfile
      - run: yarn export
      - uses: actions/cache@v2
        id: restore-build
        with:
          path: ./out/
          key: ${{ github.sha }}

  push:
    runs-on: ubuntu-latest
    needs: [build]
    permissions:
      packages: write
      contents: read

    steps:
      - uses: actions/checkout@v3
      - uses: actions/cache@v2
        id: restore-build
        with:
          path: ./out/
          key: ${{ github.sha }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Build image
        run: docker buildx build --platform linux/arm/v7,linux/amd64,linux/arm64 . --tag $IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}"

      - name: Log in to registry

        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $ --password-stdin
      - name: Push image
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME

          # Change all uppercase to lowercase
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
          # Strip git ref prefix from version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
          # Strip "v" prefix from tag name
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
          # Use Docker `latest` tag convention
          [ "$VERSION" == "master" ] && VERSION=latest
          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION
          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:$VERSION
          docker tag $IMAGE_NAME $IMAGE_ID:latest
          docker push $IMAGE_ID:latest