linux下yum无法安装lrzsz，Error: Failed to download metadata for repo ‘appstream‘: Cannot prepare internal
在使用docker的时候，安装软件提示：Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist
在使用docker的时候，使用yum安装软件提示：Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist
如下图：
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