Docker 安装

一、安装
本位以CentOS 7为例
官方安装指南

yum install update
移除旧版
sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

设置docker源
sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

安装最新版
sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

设置开机自启
sudo systemctl start docker

检查
sudo docker run hello-world