首先需要确保centos环境能上网
1、yum install -y epel-release
2、yum install -y docker-io
如果遇到:No package docker-io available 错误:无须任何处理,则执行以下:
yum install https://get.docker.com/rpm/1.7.1/centos-6/RPMS/x86_64/docker-engine-1.7.1-1.el6.x86_64.rpm
3、安装后的配置文件:/etc/sysconfig/docker
4、启动docker后台服务:service docker start
5、docker version 验证