docker pull ubuntu
docker run -d -it --name substrate -p 9900:80 ubuntu
docker exec -it substrate bash
//修改apt源,修改/etc/apt/sources.list
deb http://cn.archive.ubuntu.com/ubuntu bionic main multiverse restricted universe
deb http://cn.archive.ubuntu.com/ubuntu bionic-updates main multiverse restricted universe
deb http://cn.archive.ubuntu.com/ubuntu bionic-security main multiverse restricted universe
deb http://cn.archive.ubuntu.com/ubuntu bionic-proposed main multiverse restricted universe