centos7安装docker
设置yum源
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum makecache fast
安装docker
yum install docker-ce
启动//停止
docker version #查看版本
systemctl start docker # 启动
systemctl status docker # 查看状态
systemctl stop docker # 停止
systemctl restart docker # 重启
systemctl enable docker # 开机自动启动
# 验证
docker run hello-world
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如上证明安装成功
