Docker名称解析[Errno -3]暂时失败 [英] Temporary failure in name resolution [Errno -3] with Docker

问题描述

我正在遵循 docker教程，并且在我所拥有的那一部分使用以下方法构建应用程序:

I'm following the docker tutorial and am on the part where I have to build the app using:

docker build -t friendlyhello .

它到达第4步，在暂停后出现此错误:

It reaches up to step 4, where after a pause I get this error:

Step 4/7 : RUN pip install -r requirements.txt
 ---> Running in 7f4635a7510a
Collecting Flask (from -r requirements.txt (line 1))

Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after 
connection broken by
'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection 
object at 0x7fe3984d9b10>: Failed to establish a new connection: 
[Errno -3] Temporary failure in name resolution',)': /simple/flask/

我不太确定此错误的含义以及如何解决该错误.

I'm not quite sure what this error means and how I can go about solving it.

感谢您的帮助！

推荐答案

我在Ubuntu 16.04和Docker 17.09.0-ce版本中遇到了同样的问题. 我认为禁用dns掩码不是正确的解决方案.

I got the same problem with Ubuntu 16.04 and Docker version 17.09.0-ce. I don't think disabling dns mask is the right solution.

这是我解决的方法:

对于Ubuntu

编辑/etc/default/docker并将您的DNS服务器添加到以下行:

Edit /etc/default/docker and add your DNS server to the following line:

示例 DOCKER_OPTS="--dns 8.8.8.8 --dns 10.252.252.252"

Example DOCKER_OPTS="--dns 8.8.8.8 --dns 10.252.252.252"

参考: Docker-在企业网络上构建映像期间网络调用失败

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