1）下载ubuntu镜像

docker pull ubuntu

2）查看镜像

docker images

3）运行容器

docker run -itd --name ubuntu-test ubuntu

4）进入容器

sudo docker exec -it ubuntu-test /bin/bash

5）更新源

apt-get update

6）安装python

apt-get install python

7）安装pip

apt install curl
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py

8）安装其它命令

apt install iputils-ping    # ping
apt install net-tools    # ifconfig
apt-get install iproute2 iproute2-doc    # ip rule