CentOS 安装 Docker

1、首先更新 yum 源：

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
cd /etc/yum.repos.d/
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
yum makecache
yum -y update

2、安装 Docker

rpm -Uvh http://ftp.riken.jp/Linux/fedora/epel/6Server/x86_64/epel-release-6-8.noarch.rpm
yum install -y docker-io