code: func (daemon *Daemon) ContainerChanges(name string) ([]archive.Change, error) {
  	start := time.Now()
  	container, err := daemon.GetContainer(name)
  	if err != nil {
  		return nil, err
  	}
  
  	if runtime.GOOS == "windows" && container.IsRunning() {
  		return nil, errors.New("Windows does not support diff of a running container")
  	}
  
  	container.Lock()
  	defer container.Unlock()
  	if container.RWLayer == nil {
  		return nil, errors.New("RWLayer of container " + name + " is unexpectedly nil")
  	}
  	c, err := container.RWLayer.Changes()
  	if err != nil {
  		return nil, err
  	}
  	containerActions.WithValues("changes").UpdateSince(start)
  	return c, nil
  }
docs: // ContainerChanges returns a list of container fs changes