code: def _get_compose_volumes(app_name, assembled_specs):
      
      volumes = []
      volumes.append(_get_cp_volume_mount(app_name))
      volumes += get_app_volume_mounts(app_name, assembled_specs)
      return volumes
docs: This returns formatted volume specifications for a docker-compose app. We mount the app
      as well as any libs it needs so that local code is used in our container, instead of whatever
      code was in the docker image.
  
      Additionally, we create a volume for the /cp directory used by Dusty to facilitate
      easy file transfers using `dusty cp`.