更换国内源 /etc/apt/sources.list，但需要先安装vim，或者用sed命令直接更改sources.list文件
可以先apt-get install vim
#进入容器
docker exec -it 容器ID /bin/bash
#先安装vim
apt-get update
apt-get install vim
mv /etc/apt/sources.list /etc/apt/sources.list.bd
vim /etc/apt/sources.list
#此处我使用腾讯云的源
deb http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib
deb http://mirrors.cloud.tencent.com/debian-security buster/updates main
deb http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib
deb http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib
deb-src http://mirrors.cloud.tencent.com/debian-security buster/updates main
deb-src http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib
deb-src http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib
deb-src http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib
#此命令如果报错，需要更换其他源，我试了163源是不行的，腾讯源可以
apt-get update
apt-get install ******
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