在Docker构建期间名称解析失败 [英] Name resolution failing during docker build

问题描述

我遇到一个问题，在发出docker build命令时收到以下错误：-

I am experiencing an issue where I receive the following error when issuing the docker build command:-

curl: (6) Could not resolve host: dl.yarnpkg.com
gpg: no valid OpenPGP data found.

这是我的Dockerbuild文件

Here is my Dockerbuild file

# Base image
FROM ruby:2.5.0

RUN curl -sL https://deb.nodesource.com/setup_8.x | bash -
RUN curl -fsSL https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee 
/etc/apt/sources.list.d/yarn.lisT
RUN apt-get update 
RUN apt-get install -qq -y build-essential libpq-dev nodejs yarn

在docker外部运行时，命令成功完成。

The commands complete successfully when run outside of docker.

为了解决问题，我尝试了以下操作

In order to resolve the issues I have tried the following

1. 将DNS服务器添加到/etc/docker/daemon.json-相同问题


2. 取消注释/ etc / default / docker中的DOCKER_OPTS =-dns 8.8.8.8 --dns 8.8.4.4行-相同问题


3. 替换我在/etc/resolv.conf中本地使用的DNS服务器-同样的问题。

我尝试了Google的DNS服务器和OpenDNS，以及多个ISP，具体取决于运行命令的位置

I have tried DNS servers from Google and OpenDNS, as well as multiple ISPs depending on the location im running the command from

Laptop运行的是Ubuntu 16：04，Docker版本为18.06.0-ce，内部版本为0ffa825

Laptop is running Ubuntu 16:04 with Docker version 18.06.0-ce, build 0ffa825 installed.

使用以下命令也会失败

FROM ruby:2.5.0
RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs

导致以下错误

W: Failed to fetch http://deb.debian.org/debian/dists/stretch/InRelease  Temporary failure resolving 'deb.debian.org'
W: Failed to fetch http://deb.debian.org/debian/dists/stretch-updates/InRelease  Temporary failure resolving 'deb.debian.org'
W: Failed to fetch http://security.debian.org/dists/stretch/updates/InRelease  Temporary failure resolving 'security.debian.org'
W: Some index files failed to download. They have been ignored, or old ones used instead.

所以我知道这不是dl.yarnpkg.com主机的问题。

So I know this isnt just a problem iwth the dl.yarnpkg.com host.

使用no-cache选项运行docker build命令没有区别。

Running the docker build command with the no-cache option makes no difference.

推荐答案

我在Docker和Ubuntu 16.04上使用了Docker，有时我也遇到名称解析问题。

I am using Docker with Ubuntu 16.04 and sometimes I have name resolution problems too.

唯一通过添加-network的方法= host 。我不太确定发生了什么，但似乎需要使用它来使用计算机名称解析功能。希望对您有所帮助。

The only thing that made it through was adding --network=host when building. I'm not really sure what's going on but it seems it needs this to use your computer name resolution capabilities. I hope it helps.

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