Docker 是一个开源的应用容器引擎,可以打包、发布和运行应用。本教程将指导您在 CentOS 系统上安装 Docker。

安装 Docker

  1. 更新系统
    首先更新您的系统,以便安装 Docker:

    sudo yum update -y
    
  2. 安装 Docker
    安装 Docker 的 yum 仓库:

    sudo yum install -y yum-utils
    sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
    

    然后安装 Docker:

    sudo yum install -y docker-ce docker-ce-cli containerd.io
    
  3. 启动 Docker
    启动 Docker 服务:

    sudo systemctl start docker
    
  4. 验证安装
    运行一个简单的容器来验证 Docker 是否安装正确:

    sudo docker run hello-world
    

    如果一切正常,您应该看到如下输出:

    Hello from Docker!
    This message shows that your installation appears to be working correctly.
    To generate this message, Docker took the following steps:
     1. The Docker client executed the 'docker run hello-world' command.
     2. The Docker daemon received the request from the client and forwarded it to the container runtime.
     3. The container runtime pulled the "hello-world" image from the Docker Hub.
     4. The container runtime created a new container from that image which runs the 'hello-world' program.
     5. The program finished and exited, and the container was removed.
    

学习更多

要深入了解 Docker,您可以访问 Docker 官方文档

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如果您想要更深入地了解 Docker 的使用和配置,可以阅读我们的另一篇教程:Docker 高级教程