docker遇到问题六：centos6 yum安装docker失败，提示“No package docker-io available”安装排查原因解决方法
安装使用yum安装docker，执行yum -y install docker-io，提示信息如下：[root@host-10-200-143-61 ~]# yum -y install docker-ioLoaded plugins: fastestmirrorSetting up Install ProcessLoading mirror speeds from cached...
