centos7 docker升级到指定版本

1. systemctl stop docker

2. rpm -qa | grep docker             // 查看当前版本

3. 卸载docker

   yum erase docker \

      docker-client \

      docker-client-latest \

      docker-common \

      docker-latest \

      docker-latest-logrotate \

      docker-logrotate \

      docker-selinux \

      docker-engine-selinux \

      docker-engine \

      docker-ce

4. find /etc/systemd -name '*docker*' -exec rm -f {} \;

   find /lib/systemd -name '*docker*' -exec rm -f {} \;

   rm -rf /var/lib/docker   #删除以前已有的镜像和容器,非必要

   rm -rf /var/run/docker

5. 添加yum源

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

6. 查看可安装版本

   yum list docker-ce --showduplicates | sort -r

7. 启动并开机自启

   systemctl start docker

   systemctl enable docker