Docker container installation vim failure solution

1. Switch the apt-get image source in docker to Tsinghua source

Backup source: mv /etc/apt/sources.list /etc/apt/sources.list.bak
 execute new source

echo  "deb http://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free" >/etc/apt/sources.list
echo  "deb http://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free" >>/etc/apt/sources.list
echo  "deb http://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free" >>/etc/apt/sources.list
echo  "deb http://mirrors.tuna.tsinghua.edu.cn/debian-security buster/updates main contrib non-free" >>/etc/apt/sources.list

2. Execute apt-get update, and then install vim

apt-get update
apt-get install vim
3. Check whether it is successful

vim --help