（原地址：http://www.linuxidc.com/Linux/2014-09/106675.htm）
当我们把CentOS 6.5安装好以后，可以使用这个脚本来使用国内的阿里云镜像源
#!/bin/bash mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup mv /etc/yum.repos.d/epel-testing.repo /etc/yum.repos.d/epel-testing.repo.backup wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo yum makecache
有了国内的源地址，后面安装东西就方便了。
搜索docker，可以看到docker-io.x86_64和docker-registry.noarch，安装docker就简单了。
[root@localhost ~]# yum search docker Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile ======================================================== N/S Matched: docker ========================================================= python-docker-py.x86_64 : An API client for docker written in Python docker-io.x86_64 : Automates deployment of containerized applications docker-registry.noarch : Registry server for Docker Fedora-dockerfiles.noarch : Example dockerfiles to assist standing up containers quickly imagefactory-plugins-Docker.noarch : Cloud plugin for Docker docker.x86_64 : KDE and GNOME2 system tray replacement docking application Name and summary matches only, use "search all" for everything.