correct test config for GitHub Actions:

          image: docker:latest

          run: echo "hello world"

  test-cellranger:

    runs-on: ubuntu-latest

    steps:  

      - uses: actions/checkout@v2

      - name: What OS is running

        run: uname -a

      - name: Where am i

        run: pwd; ls

      - name: call Cell Ranger

        run: which cellranger; cellranger -v

  test-cellranger:

    runs-on: ubuntu-20.04

    steps:

    - name: Cell Ranger Call

      run: docker run ${{ secrets.DOCKER_HUB_USERNAME }}/cellranger_clean:latest cellranger -v

  test-universc:

  test-repo:

    runs-on: ubuntu-latest

    steps:

      - uses: actions/checkout@v2

      - name: pull updates

        run: cd universc; git pull origin master

      - name: call UniverSC

        run: bash /universc/launch_universc.sh -v

      - name: test callas

        run: bash /universc/test/test_call.sh

        run: ls /universc/launch_universc.sh 

  test-universc:

    runs-on: ubuntu-20.04