code: def layers(name):
      '''
      Returns a list of the IDs of layers belonging to the specified image, with
      the top-most layer (the one correspnding to the passed name) appearing
      last.
  
      name
          Image name or ID
  
      CLI Example:
  
      .. code-block:: bash
  
          salt myminion docker.layers centos:7
      '''
      ret = []
      cmd = ['docker', 'history', '-q', name]
      for line in reversed(
              __salt__['cmd.run_stdout'](cmd, python_shell=False).splitlines()):
          ret.append(line)
      if not ret:
          raise CommandExecutionError('Image \'{0}\' not found'.format(name))
      return ref layers(name):
      '''
      Returns a list of the IDs of layers belonging to the specified image, with
      the top-most layer (the one correspnding to the passed name) appearing
      last.
  
      name
          Image name or ID
  
      CLI Example:
  
      .. code-block:: bash
  
          salt myminion docker.layers centos:7
      '''
      ret = []
      cmd = ['docker', 'history', '-q', name]
      for line in reversed(
              __salt__['cmd.run_stdout'](cmd, python_shell=False).splitlines()):
          ret.append(line)
      if not ret:
          raise CommandExecutionError('Image \'{0}\' not found'.format(name))
      return ret
docs: Returns a list of the IDs of layers belonging to the specified image, with
      the top-most layer (the one correspnding to the passed name) appearing
      last.
  
      name
          Image name or ID
  
      CLI Example:
  
      .. code-block:: bash
  
          salt myminion docker.layers centos:7