解决：Docker中CentOS镜像的yum等安装问题bash: xxxx: command not found

问题背景：

1、

[root@0b6b7678467c xxx]# yum -y install vim Failed to set locale, defaulting to C.UTF-8
CentOS Linux 8 - AppStream    1.7  B/s |  38  B     00:21
Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

2、

#执行一些man man或者vim的时候报错
bash: xxxx: command not found

解决方案：

1、ls /etc/yum.repos.d/

2、mv /etc/yum.repos.d/CentOS-Linux-BaseOS.repo /etc/yum.repos.d/CentOS-Linux-BaseOS.repo.backup

3、curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

4、cat /etc/yum.repos.d/CentOS-Base.repo

复制这个文本的内容

5、vi /etc/yum.repos.d/CentOS-Linux-AppStream.repo

覆盖Appstream

6、yum clean all;yum makecache

7.问题解决！转载自如下链接

解决Docker：最新版本镜像centos，yum出现问题 - 知乎 (zhihu.com)