卸载旧版Docker

若系统中已存在旧版Docker，需先卸载以下组件：

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

配置Docker的yum仓库

安装必要工具并配置阿里云镜像源：

sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
sudo yum makecache fast

安装Docker

执行以下命令安装Docker及插件：

yum install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

启动与验证

启动Docker并设置开机自启：

systemctl start docker
systemctl enable docker

验证安装是否成功：

docker ps

配置镜像加速

创建配置文件并加载国内镜像源：

mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
    "registry-mirrors": [
        "http://hub-mirror.c.163.com",
        "https://mirrors.tuna.tsinghua.edu.cn",
        "http://mirrors.sohu.com",
        "https://ustc-edu-cn.mirror.aliyuncs.com",
        "https://ccr.ccs.tencentyun.com",
        "https://docker.m.daocloud.io",
        "https://docker.awsl9527.cn"
    ]
}
EOF
systemctl daemon-reload
systemctl restart docker