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解决centos6 yum源无效问题
洛阳泰山:
给大佬递茶，翻起我牌，到我博客空间逛逛!
centos更换软件源
bing_yu2001:
请问，我已下载阿里yum源，运行 yum makecache 生成缓存，执行以下build Dockerfile命令，还是报错同样的错，是什么问题呢？
[root@localhost mydocker]# docker build -f /mydocker/Dockerfile2 -t mycentos:1.3 .
Sending build context to Docker daemon 3.072kB
Step 1/10 : FROM centos
---> 470671670cac
Step 2/10 : MAINTAINER bing
---> Using cache
---> 7a13c421d468
Step 3/10 : ENV MYPATH /usr/local
---> Using cache
---> 99ba1fb30a8a
Step 4/10 : WORKDIR $MYPATH
---> Using cache
---> ac51637ccfa3
Step 5/10 : RUN yum -y install vim
---> Running in ff82e4c9332f
CentOS-8 - AppStream 0.0 B/s | 0 B 00:05
Failed to download metadata for repo 'AppStream'
Error: Failed to download metadata for repo 'AppStream'
The command '/bin/sh -c yum -y install vim' returned a non-zero code: 1
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