docker.yml

name: Docker Build
on: [push, pull_request]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Prepare
        id: prepare
        run: |
          IMAGE_NAME=modelsaber

          DOCKER_USER=`echo ${{ github.repository }} | cut -d "/" -f 1 | tr '[:upper:]' '[:lower:]'`
          DOCKER_REPO=`echo "${{ github.repository }}" | tr '[:upper:]' '[:lower:]'`
          DOCKER_IMAGE=docker.pkg.github.com/$DOCKER_REPO/$IMAGE_NAME

          VERSION=`git rev-parse --short HEAD`
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF#refs/tags/v}
          fi

          echo ::set-output name=docker_user::${DOCKER_USER}
          echo ::set-output name=docker_image::${DOCKER_IMAGE}
          echo ::set-output name=version::${VERSION}
      - name: Setup Docker Buildx
        uses: crazy-max/ghaction-docker-buildx@v3
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-
      - name: Build Docker Image
        run: |
          docker buildx build \
            --cache-from "type=local,src=/tmp/.buildx-cache" \
            --cache-to "type=local,dest=/tmp/.buildx-cache" \
            --output "type=docker" \
            --tag ${{ steps.prepare.outputs.docker_image }}:${{ steps.prepare.outputs.version }} \
            --file Dockerfile .
      - name: Login to Docker Registry
        run: echo ${{ secrets.GITHUB_TOKEN }} | docker login docker.pkg.github.com --username ${{ steps.prepare.outputs.docker_user }} --password-stdin
      - name: Push to Docker Registry
        if: (github.ref == 'refs/heads/master') || (contains(github.ref, 'refs/tags/') == true)
        run: docker push ${{ steps.prepare.outputs.docker_image }}:${{ steps.prepare.outputs.version }}