设置DHCP
vi /etc/sysconfig/network-scripts/ifcfg-ens32
（1）bootproto=dhcp
（2）onboot=yes
重启网卡：systemctl restart network
安装Docker
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum makecache fast
yum -y install docker-ce
systemctl enable docker
service docker start