deploy_dockerhub.yml

# https://github.com/marketplace/actions/publish-docker
name: Deploy to dockerhub
on: [push, workflow_dispatch]
jobs:
  check-secret:
    runs-on: ubuntu-latest
    outputs:
      secrets-defined: ${{ steps.secret-check.outputs.defined }}
    steps:
      - name: Check for Secret availability
        id: secret-check
        shell: bash
        run: |
          if [ "${{ secrets.DOCKER_USERNAME }}" != '' ]; then
            echo "defined=true" >> $GITHUB_OUTPUT;
          else
            echo "defined=false" >> $GITHUB_OUTPUT;
          fi

  build:
    name: Deploy to dockerhub
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master
    - run: git archive -v -o container/charliecloud/parpe_base/parpe.tar.gz --format=tar.gz HEAD
    - name: Publish to Registry
      if: needs.check-secret.outputs.secrets-defined == 'true'
      uses: elgohr/Publish-Docker-Github-Action@v5
      with:
        name: dweindl/parpe
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}
        workdir: container/charliecloud/parpe_base/
        dockerfile: Dockerfile
        tag_names: true