echo "deb http://mirrors.aliyun.com/debian/ buster main non-free contrib" > /etc/apt/sources.list &&
echo "deb http://mirrors.aliyun.com/debian-security buster/updates main" >> /etc/apt/sources.list &&
echo "deb http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib" >> /etc/apt/sources.list &&
echo "deb http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib" >> /etc/apt/sources.list &&
echo "deb-src http://mirrors.aliyun.com/debian-security buster/updates main" >> /etc/apt/sources.list &&
echo "deb-src http://mirrors.aliyun.com/debian/ buster main non-free contrib" >> /etc/apt/sources.list &&
echo "deb-src http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib" >> /etc/apt/sources.list &&
echo "deb-src http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib"