我在代理后面,无法构建Docker映像.

我尝试使用FROM ubuntu,FROM centos和FROM Alpine,但是apt-get更新/ yum更新/ apk更新失败.

我的主机操作系统是Windows 10,因此我将Docker设置配置为使用我们的代理.

而且我还添加了

ENV http_proxy http://<PROXY>
ENV https_proxy http://<PROXY>

到我的Dockerfile,但没有成功.

我还尝试将代理设置为http：//< USER>：< PASS> @< PROXY&gt ;,但同样没有成功. 我能够提取Docker映像.当我将代理设置设置为无代理时,我无法提取图像,因此我猜我的代理URL是正确的. 还有什么我可以尝试的想法吗？ 编辑： 我还尝试将我们的DNS服务器(在ipconfig / all下列出)添加到Docker设置中,但同样没有成功. 编辑2：
我只是意识到我忘记了Ubuntu Dockerfile中的“ http：//”.添加此选项后,docker build现在可以很好地用于ubuntu了-但仅适用于ubuntu.它仍然不适用于centos和高山.

这是我所有的3个Dockerfile：

Ubuntu：

FROM ubuntu
ENV http_proxy "http://<MY-PROXY>"
ENV https_proxy "http://<MY-PROXY>"
RUN apt-get update

CentOS的：

FROM centos
ENV http_proxy "http://<MY-PROXY>"
ENV https_proxy "http://<MY-PROXY>"
RUN yum update 

高山：

FROM alpine
ENV http_proxy "http://<MY-PROXY>"
ENV https_proxy "http://<MY-PROXY>"
RUN apk update 

错误讯息：

CentOS的：

Step 4/4 : RUN yum update
 ---> Running in 3deecb71823d
Loaded plugins: fastestmirror,ovl
 One of the configured repositories Failed (Unknown),and yum doesn't have enough cached data to continue. At this point the only
 safe thing yum can do is fail. There are a few ways to work "fix" this:
[...]
Cannot find a valid baseurl for repo: base/7/x86_64

高山：

Step 4/4 : RUN apk update
 ---> Running in 76c8579734cf
fetch http://dl-cdn.alpinelinux.org/alpine/v3.6/main/x86_64/APKINDEX.tar.gz
ERROR: http://dl-cdn.alpinelinux.org/alpine/v3.6/main: could not connect to server (check repositories file)
WARNING: Ignoring APKINDEX.84815163.tar.gz: No such file or directory
fetch http://dl-cdn.alpinelinux.org/alpine/v3.6/community/x86_64/APKINDEX.tar.gz
2 errors; 11 distinct packages available
ERROR: http://dl-cdn.alpinelinux.org/alpine/v3.6/community: could not connect to server (check repositories file)
WARNING: Ignoring APKINDEX.24d64ab1.tar.gz: No such file or directory
The command '/bin/sh -c apk update' returned a non-zero code: 2