centos9 安装docker engine

查看是否具有历史版本的docker

        命令

rpm -qa | grep -E 'docker|containerd|podman'

        运行结果

我的镜像有安装podman，这里需要卸载

卸载历史版本

        命令

dnf remove -y docker-ce docker-ce-cli containerd.io podman

运行结果

安装docker环境

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

添加 Docker 官方仓库

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

安装docker

dnf install -y docker-ce docker-ce-cli containerd.io

配置国内镜像

mkdir -p /etc/docker
vi /ect/docker/daemon.json

将如下json粘贴进入daemon.json中

{"registry-mirrors": ["https://e2zfh98i.mirror.aliyuncs.com","https://mirror.baidubce.com","https://docker.mirrors.ustc.edu.cn","https://docker-cf.registry.cyou","https://dockercf.jsdelivr.fyi","https://docker.jsdelivr.fyi","https://dockertest.jsdelivr.fyi","https://dockerproxy.com","https://docker.m.daocloud.io","https://docker.nju.edu.cn","https://docker.mirrors.sjtug.sjtu.edu.cn","https://mirror.iscas.ac.cn","https://docker.rainbond.cc","https://do.nark.eu.org","https://dc.j8.work","https://dockerproxy.com","https://gst6rzl9.mirror.aliyuncs.com","https://registry.docker-cn.com","http://hub-mirror.c.163.com","http://mirrors.ustc.edu.cn/","https://mirrors.tuna.tsinghua.edu.cn/","http://mirrors.sohu.com/"],"debug": true,"experimental": false}

启动docker 

        启动docker

systemctl start docker

运行hello-world镜像

docker run hello-world

看到如下截图代表成功