安装centos镜像并run之后，使用yum install 命令安装出现如下错误，可使用此命令替换mirror。

报错信息：

Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=aarch64&repo=os&infra=container error was
14: curl#52 - "Empty reply from server"

解决办法：执行以下命令

sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/CentOS-*.repo

sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/CentOS-*.repo

sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/CentOS-*.repo