centos8 docker安装

官方参考地址：https://docs.docker.com/install/linux/docker-ce/centos/

下载地址： https://download.docker.com/linux/centos/7/x86_64/stable/Packages/

• 设置语言环境

echo "export LC_ALL=en_US.UTF-8"  >>  /etc/profile 
source /etc/profile

• 卸载老版本

sudo yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine

• 安装必要工具包

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

• 添加软件源信息

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

• 安装docker-ce

sudo yum install docker-ce docker-ce-cli

　此处如果出现y以下错误:

Error: 

 Problem: package docker-ce-3:19.03.6-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installeddnf install

#进入官网下载地址查看最新版本,安装最新版containerd.io
dnf install https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm

• 启动docker服务

sudo systemctl start docker

• 开机启动

sudo systemctl enable docker

• 查看版本

docker --version