未能从dockerhub中拖拽docker / whalesay，

我已经在ubuntu14.04-64bit上安装docker，当我想运行演示，发生错误，

y7:~$ docker run docker/whalesay cowsay boo Unable to find image 'docker/whalesay:latest' locally Repository docker/whalesay already being pulled by another client. Waiting. Error response from daemon: No such image: docker/whalesay (tag: latest) 7:~$ docker run docker/whalesay Unable to find image 'docker/whalesay:latest' locally latest: Pulling from docker/whalesay e9e06b06e14c: Pulling fs layer a82efea989f9: Pulling fs layer e9e06b06e14c: Error pulling dependent layers 07f8e8c5e660: Pulling fs layer 676c4a1897e6: Pulling fs layer 5b74edbcaa5b: Pulling fs layer 1722f41ddcb5: Pulling fs layer 99da72cfe067: Pulling fs layer 5d5bd9951e26: Pulling fs layer fb434121fc77: Download complete fb434121fc77: Pulling image (latest) from docker/whalesay, endpoint: https://regfb434121fc77: Error pulling image (latest) from docker/whalesay, endpoint: https://registry-1.docker.io/v1/, Server error: Status 0 whilefetching image layer (fb434121fc77: Error pulling image (latest) from docker/whalesay, Server error: Status 0 while fetching image layer (e9e06b06e14c2f7d8df0251e3bb852c3a10a70639498Error pulling image (latest) from docker/whalesay, Server error: Status 0 while fetching image layer (e9e06b06e14c2f7d8df0251e3bb852c3a10a70639498163d4f180a823c18fdfc) 

Answer 1

消息Error response from daemon: No such image: docker/whalesay (tag: latest)有点令人困惑，但真正的错误是在它的上面：

 Repository docker/whalesay already being pulled by another client. Waiting. 

如果你开始拉回购买，然后控制 c ，Docker守护进程将暂停一段时间，拒绝进一步拉回该回购。

Answer 2

有时系统可能需要同时拥有一些本地Docker回购站，以及在DockerHub上托pipeDocker镜像。 要确定你指向DockerHub仓库的最好方法就是拉

 docker.io/<repo>/<app> 

在你的情况下，尝试

 docker.io/docker/whalesay