[Docker] Docker 최신 버전 설치

yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-selinux  docker-engine-selinux docker-engine

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

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

yum install -y docker-ce 

systemctl start docker 

systemctl enable docker 

systemctl status docker

docker-ce가 아닌 그냥 docker를 설치하면 구버전이 설치된다