gistfile1.txt

var dc = dockerClient{*docker.ArgDockerEndpoint}

type dockerClient struct {
	endpoint string
	c        *dclient
	lock     mutex
}

func (d *dockerClient) getClient() (client, err) {
	d.Lock()
	defer d.Unlock()
	if d.c == nil {
		d.c, _ = NewClient(d.endpoint)
	}
	return d.c, nil
}