文档说明： 只是记录关键点
alpine
test -f /etc/apk/repositories.save || cp /etc/apk/repositories /etc/apk/repositories.save
sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories
debian 或者 ubuntu
test ! -f /etc/apt/source.list.save && cp /etc/apt/sources.list /etc/apt/sources.list.save
sed -i "[email protected]@mirrors.ustc.edu.cn@g" /etc/apt/sources.list && \
sed -i "[email protected]@mirrors.ustc.edu.cn@g" /etc/apt/sources.list &&