redhat7.2 安装docker

# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

# sed -i  's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo

# yum clean all

# yum list

# yum -y install docker

# systemctl start docker