docker 升级到最新版

步骤

1. 卸载旧版 docker

> rpm -qa | grep docker # 也可以使用 yum list installed | grep docker 
docker-engine-1.13.0-1.el7.centos.x86_64
docker-engine-selinux-1.13.0-1.el7.centos.noarch
> yum remove docker-engine-1.13.0-1.el7.centos.x86_64
> yum remove docker-engine-selinux-1.13.0-1.el7.centos.noarch

2. 升级至最新版

> curl -fsSL https://get.docker.com/ | sh

3. 重启docker

> systemctl restart docker # centos 7
> service docker restart # centos 6

4. 查看升级后的版本

> docker version # docker -v