未能从dockerhub中提取docker/whalesay，
我在ubuntu14.04-64位上安装了docker，当我想运行演示时，出现错误未能从dockerhub中提取docker/whalesay，,docker,Docker,我在ubuntu14.04-64位上安装了docker，当我想运行演示时，出现错误 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 su
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)
daemon发出的消息
错误响应：没有这样的图像：docker/whalesay（tag:latest）Repository docker/whalesay already being pulled by another client. Waiting.
如果您开始拉取一个repo，然后是controlc，Docker守护进程将挂起一段时间，并拒绝对该repo进行进一步拉取。有时系统可能需要同时具有几个本地Docker repo，以及Docker映像托管在DockerHub上。要确保你正指向DockerHub回购的最佳方式是与
docker.io/<repo>/<app>
您是否在某个防火墙后面，该防火墙可能会阻止下载？首先检查您的网络。
docker.io/docker/whalesay