docker install

config YUM proxy

 RUN sudo yum install -y yum-utils device-mapper-persistent-data lvm2

RUN yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

RUN sudo yum-config-manager --enable docker-ce-edge

RUN yum install -y --setopt=obsoletes=0 docker-ce-17.03.1.ce-1.el7.centos docker-ce-selinux-17.03.1.ce-1.el7.centos

 check

check system version