code: def push(config, services):
      
      version = _get_version()
      for service_name, service_dict in services.iteritems():
          image = service_dict['image']
          things = {'image': image, 'version': version}
          _call_output('docker push {image}:latest'.format(**things))
          _call_output('docker push {image}:{version}'.format(**things))
docs: Upload the defined services to their respective repositories.
  
      So's we can then tell the remote docker host to then pull and run them.