centos7安装19版本Docker详细步骤

为了在CentOS 7上安装Docker版本19，可以按照以下步骤进行操作:

1. 首先，卸载已有的Docker版本，可以使用以下命令: [1]

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

2. 然后，检查CentOS的版本，确保是CentOS 7: [1]

   cat /etc/redhat-release

3. 更新yum包管理器: [1]

   sudo yum update

4. 添加Docker的yum仓库: [2]

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

5. 安装Docker: [1]

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

6. 启动Docker并设置为开机自动启动: [1]

   sudo systemctl start docker
   sudo systemctl enable docker

7. 验证Docker是否安装成功: [1]

   sudo docker run hello-world

通过以上步骤，你应该能够在CentOS 7上成功安装Docker版本19。祝你好运！<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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