镜像文件下载

https://buildlogs.centos.org/centos/7/docker/

修改安装源

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo
yum clean all
yum makecache

常用软件安装

yum install -y initscripts
yum install -y bash-completion.noarch
yum install -y net-tools vim lrzsz wget tree screen lsof tcpdump