参考文章
Debian 11 (bullseye) 国内软件源 - Guanglin - 博客园 (cnblogs.com)
docker容器改变apt-get为国内源 - 简书 (jianshu.com)
源文件备份
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
echo "" > /etc/apt/sources.list;
echo "deb https://mirrors.163.com/debian/ bullseye main non-free contrib" >> /etc/apt/sources.list;
echo "deb-src https://mirrors.163.com/debian/ bullseye main non-free contrib" >> /etc/apt/sources.list;
echo "deb https://mirrors.163.com/debian-security/ bullseye-security main" >> /etc/apt/sources.list;
echo "deb-src https://mirrors.163.com/debian-security/ bullseye-security main" >> /etc/apt/sources.list;
echo "deb https://mirrors.163.com/debian/ bullseye-updates main non-free contrib" >> /etc/apt/sources.list;
echo "deb-src https://mirrors.163.com/debian/ bullseye-updates main non-free contrib" >> /etc/apt/sources.list;
echo "deb https://mirrors.163.com/debian/ bullseye-backports main non-free contrib" >> /etc/apt/sources.list;
echo "deb-src https://mirrors.163.com/debian/ bullseye-backports main non-free contrib" >> /etc/apt/sources.list;
sed -i "s@https@http@g" /etc/apt/sources.list
apt-get clean
apt-get update
apt install ca-certificates --reinstall
sed -i "s@http@https@g" /etc/apt/sources.list
apt-get clean
apt-get update