code: func (c *containerManager) RemoveAll(stdout io.Writer) {
  	for containerID := range c.tmpContainers {
  		if err := c.removeContainer(containerID, stdout); err != nil {
  			return
  		}
  		delete(c.tmpContainers, containerID)
  		fmt.Fprintf(stdout, "Removing intermediate container %s\n", stringid.TruncateID(containerID))
  	}
  }
docs: // RemoveAll containers managed by this container manager