配置本地apt源

1.  挂载光盘

mount  /dev/sr0   /mnt　

2.  配置源文件

cd  /etc/apt

vim  cat sources.list

## Generated by deepin-installer
deb https://home-packages.chinauos.com/home plum main contrib non-free
#deb-src https://home-packages.chinauos.com/home plum main contrib non-free

deb [trusted=yes] file:///mnt fou main  # 添加这一行配置    

3. 更新源

apt  update