name: Docker

on:
  push:
    # Publish `v1.2.3` tags as releases.
    tags:
      - v*

env:
  IMAGE_NAME: bsc

jobs:
  # Push image to GitHub Packages.
  push:
    runs-on: ubuntu-latest
    if: github.event_name == 'push'

    steps:
      - uses: actions/checkout@v3

      - name: Build image
        run: |
            docker build . \
            --label "org.opencontainers.image.source=${{ secrets.IMAGE_SOURCE }}" \
            --label "org.opencontainers.image.revision=$(git rev-parse HEAD)" \
            --label "org.opencontainers.image.version=$(git describe --tags --abbrev=0)" \
            --label "org.opencontainers.image.licenses=LGPL-3.0,GPL-3.0" \
            -f ./Dockerfile -t "${IMAGE_NAME}"

      - name: Log into registry
        run: echo "${{ secrets.PACKAGE_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin

      - name: Push image
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository }}
          
          # 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 tag $IMAGE_NAME $IMAGE_ID:latest
          docker push $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:latest