# Adapted from
# https://github.com/actions/starter-workflows/ci/docker-publish.yml
# If using base images, don't forget to add READ access, eg. from a package settings page like:
# https://github.com/orgs/storytold/packages/container/docker-base-images-rust-ssl/settings/actions_access
name: Build MocapNet Docker Image
on:
  push:
    paths:
      - 'animation/MocapNET-kasisnu/**'
    branches:
      # NB: Default-branch doesn't work, despite Github's documentation.
      #- $default-branch
      - master
env:
  IMAGE_NAME: mocapnet

jobs:
  # Push image to GitHub Packages.
  # See also https://docs.docker.com/docker-hub/builds/
  push:
    #runs-on: ubuntu-latest
    runs-on: github-ubuntu-64core # NB: Premium GitHub runner with more cores
    if: github.event_name == 'push'
    permissions:
      packages: write
      contents: read

    steps:
      - uses: actions/checkout@v2

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          #username: ${{ github.repository_owner }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }} 

      - name: Build image
        run: cd animation/MocapNET-kasisnu/ && docker build . --file docker/Dockerfile --tag $IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}"

      - name: Push image to GitHub Container Registry
        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
          [ "$VERSION" == "$default-branch" ] && VERSION=latest

          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION

          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:$VERSION

          SHORT_SHA=$(echo ${GITHUB_SHA} | cut -c1-12)

          docker tag $IMAGE_NAME $IMAGE_ID:$SHORT_SHA
          docker push $IMAGE_ID:$SHORT_SHA