1、清理本地环境,卸载旧版本 卸载较旧的 Docker 版本称为 docker 或 docker-engine

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

2、安装docker需要用到的yum工具类依赖

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

3、添加docker仓库源地址(阿里云)

yum-config-manager \
    --add-repo \
    http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

4、安装docker(默认安装最新版本)

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

5、启动并设置自启动docker服务

systemctl enable docker —now
docker —version

6、镜像加速配置

mkdir -p /etc/docker 
tee /etc/docker/daemon.json <<-'EOF’ 
{ 
    "registry-mirrors": ["https://e5ptke54.mirror.aliyuncs.com”] 
} 
EOF

systemctl daemon-reload 
systemctl restart docker