centos7 安装docker
安装需要的软件包
yum install -y yum-utils device-mapper-persistent-data lvm2
设置yum安装源
yum-config-manager --add-repo http://download.docker.com/linux/centos/docker-ce.repo(中央仓库)
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo(国内建议安装阿里仓库)
安装
yum install -y docker-ce docker-ce-cli http://containerd.io
启动 Docker 并设置开机自启
systemctl start docker
systemctl enable docker