docker 指定版本rpm包安装

# https://download.docker.com/linux/centos/7/x86_64/stable/Packages/

# wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-18.06.0.ce-3.el7.x86_64.rpm 

# yum -y install docker-ce-18.06.0.ce-3.el7.x86_64.rpm

# mkdir -p /etc/docker/

# cat  >/etc/docker/daemon.json<<EOF 
{
  "registry-mirrors": ["https://registry.docker-cn.com"]
}
EOF

systemctl start docker.service

# docker version

Client:
 Version:           18.06.0-ce
 API version:       1.38
 Go version:        go1.10.3
 Git commit:        0ffa825
 Built:             Wed Jul 18 19:08:18 2018
 OS/Arch:           linux/amd64
 Experimental:      false

Server:
 Engine:
  Version:          18.06.0-ce
  API version:      1.38 (minimum version 1.12)
  Go version:       go1.10.3
  Git commit:       0ffa825
  Built:            Wed Jul 18 19:10:42 2018
  OS/Arch:          linux/amd64
  Experimental:     false