old_contents: """Tests for module src.docker
  
  To run on command-line: python -m pytest path/to/neurodocker/
  """
  
new_contents: """Tests for module src.docker
  
  To run on command-line: python -m pytest path/to/neurodocker/
  
  Tests that build Docker images should be named with the folllowing formula:
      test_build_image_<SOFTWARE>_<VERSION>_<INSTALLATION_METHOD>_<OS>()
  """
  
subject: add specification for test names