centos8 安装docker

一、docker安装步骤

1、移除旧的docker
yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine
2、配置阿里云的docker仓库
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.13-3.1.el7.x86_64.rpm
dnf install docker-ce
3、下载docker-ce的repo
curl https://download.docker.com/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo
dnf -y  install docker-ce  docker-ce-cli --nobest
4、启动docker
systemctl start docker
docker -v
5、设置开机自启动
systemctl enable --now docker

二、docker 命令
docker images

三、docker操作

1、拉取镜像
docker pull docker.elastic.co/elasticsearch/elasticsearch:8.5.0