Docker Ubuntu 安装 ping 命令

sed -i 's/archive.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.list;
sed -i 's/security.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.list;
apt-get clean;
apt-get update;

apt-get update
apt-get install -y iputils-ping