我刚刚在他们的网页上安装了Docker-Toolbox

我从Docker快速入门终端开始,如下所示

                        ##         .
                  ## ## ##        ==
               ## ## ## ## ##    ===
           /"""""""""""""""""\___/ ===
      ~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ /  ===- ~~~
           \______ o           __/
             \    \         __/
              \____\_______/


docker is configured to use the default machine with IP 192.168.99.100
For help getting started, check out the docs at https://docs.docker.com

bash-3.2$ 

但当我尝试执行docker拉hello-world时,这是我看到的

bash-3.2$ docker run hello-world
Unable to find image 'hello-world:latest' locally
Pulling repository docker.io/library/hello-world
Network timed out while trying to connect to https://index.docker.io/v1/repositories/library/hello-world/images. You may want to check your internet connection or if you are behind a proxy.
bash-3.2$ 

怎么了?


当前回答

更简单的解决方案是在/etc/default/docker文件中添加以下条目

出口http_proxy = " http://HOST "

并重新启动docker服务

服务docker重启

其他回答

我猜您有网络问题。你背后有代理人吗?它是否有可能过滤到docker的连接。IO或阻塞docker用户代理?

我安装了工具箱,运行了你的测试。它工作得很好,在这里:

docker is configured to use the default machine with IP 192.168.99.101
For help getting started, check out the docs at https://docs.docker.com

bash-3.2$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world

535020c3e8ad: Pull complete 
af340544ed62: Already exists 
library/hello-world:latest: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security.
Digest: sha256:d5fbd996e6562438f7ea5389d7da867fe58e04d581810e230df4cc073271ea52
Status: Downloaded newer image for hello-world:latest

Hello from Docker.
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker Hub account:
 https://hub.docker.com

For more examples and ideas, visit:
 https://docs.docker.com/userguide/

bash-3.2$

我今天早上遇到了同样的问题,下面的问题为我解决了:

$ docker-machine restart default      # Restart the environment
$ eval $(docker-machine env default)  # Refresh your environment settings

这似乎是由于Docker虚拟机进入了一个奇怪的状态。这里有一个开放的github问题

我有同样的问题与boot2docker和修复它重新启动它:

boot2docker restart

我在VBOX 5.10中使用Docker VM在我的MAC(主机)上运行Docker时遇到了这个问题。这是一个网络问题。简单的解决方法是向VBOX映像添加一个桥接网络。您可以使用虚拟机附带的NAT配置,但需要将ssh端口从50375更改为2375。

另一种情况:如果您的docker网络适配器是禁用的,它将失败与此错误。适配器被命名为“vEthernet (DockerNAT)”或类似的名称。显然,这个适配器以某种方式参与了正常的docker pull行为。让它回来解决问题。