code: def _commandline(repositories,
                   port=8000, host="127.0.0.1", debug=False,
                   cache=None, cache_path="./cache", redis=None):
      
  
      if cache == "redis":
          nautilus_cache = RedisCache(redis)
          cache_type = "redis"
      elif cache == "filesystem":
          nautilus_cache = FileSystemCache(cache_path)
          cache_type = "simple"
      else:
          nautilus_cache = NullCache()
          cache_type = "simple"
  
      app = Flask("Nautilus")
      if debug:
          app.logger.setLevel(logging.INFO)
  
      resolver = NautilusCtsResolver(resource=repositories)
      nautilus = FlaskNautilus(
          app=app,
          resolver=resolver
          #parser_cache=WerkzeugCacheWrapper(nautilus_cache),
          #logger=None
      )
      nautilus.resolver.parse()
      app.run(debug=debug, port=port, host=host)
docs: Run a CTS API from command line.
  
      .. warning:: This function should not be used in the production context
  
      :param repositories:
      :param port:
      :param ip:
      :param debug:
      :param cache:
      :param cache_path:
      :return: