一、安装 Docker1. 安装依赖工具yum install -y yum-utils device-mapper-persistent-data lvm22. 添加阿里云 Docker YUM 源国内速度快yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo3. 刷新缓存并安装 Docker含 CLI 和 containerdyum makecache fast yum install -y docker-ce docker-ce-cli containerd.io二、启动并设置开机自启systemctl start docker systemctl enable docker三、验证安装成功docker version四、可选配置阿里云镜像加速mkdir -p /etc/docker cat /etc/docker/daemon.json EOF { registry-mirrors: [https://mirror.aliyuncs.com] } EOF systemctl daemon-reload systemctl restart docker注意如果yum install docker-ce时报错说找不到包可能是之前 YUM 源CentOS-Base.repo没完全修好可以先跑一遍yum clean all yum makecache五、验证 Docker 是否真的能跑容器docker run hello-world成功示例