1、内核要求：3.1版本以上
2、先重做了系统：centos7.6
3、yun准备好：/etc/yum.repos.d
（1）CentOS-Base.repo
[base] name=base baseurl=http://mirrors-sc.iflytek.com/basic/Centos7.6/ enabled=1 gpgcheck=0
（2）iflytekdc-centos.repo
[iflytekdc-os] name=iflytekdc-os baseurl=http://mirrors.iflytekdc.com:8081/repository/centos-aliyun/$releasever/os/$basearch/ enable=1 gpgcheck=0 [iflytekdc-updates] name=iflytekdc-updates baseurl=http://mirrors.iflytekdc.com:8081/repository/centos-aliyun/$releasever/updates/$basearch/ enable=1 gpgcheck=0 [iflytekdc-extras] name=iflytekdc-extras baseurl=http://mirrors.iflytekdc.com:8081/repository/centos-aliyun/$releasever/extras/$basearch/ enable=1 gpgcheck=0 [iflytekdc-epel] name=iflytekdc-epel baseurl=http://mirrors.iflytekdc.com:8081/repository/centos-epel/$releasever/$basearch/ enable=1 gpgcheck=0
4、yum install -y docker
报错如下：
yum clean all
继续执行安装：yum install -y docker
5、安装完成后，docker -v查看
6、systemctl start docker
7、systemctl status docker
8、加入开机自启：systemctl enable docker