code: func (WindowsStrategy) start(ctx context.Context, path string) error {
  	cmd := exec.Command(path)
  	cmd.SysProcAttr = &syscall.SysProcAttr{
  		// https://msdn.microsoft.com/en-us/library/windows/desktop/ms684863.aspx
  		// CREATE_NEW_PROCESS_GROUP: 	0x200
  		// DETACHED_PROCESS: 		0x008
  		CreationFlags: 0x200 | 0x8,
  	}
  	return cmd.Start()
  }
docs: // start starts the agent.