code: func (s *Server) Shutdown(ctx context.Context) error {
  	// why do this on clean shutdown! we want containers left running when crio
  	// is down for whatever reason no?!
  	// notice this won't trigger just on system halt but also on normal
  	// crio.service restart!!!
  	s.cleanupSandboxesOnShutdown(ctx)
  	return s.ContainerServer.Shutdown()
  }
docs: // Shutdown attempts to shut down the server's storage cleanly