docker安装

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