从标准Ubuntu存储库安装Docker

• 使用apt命令安装docker.io包：

sudo apt install docker.io

• 启动Docker并启用它在系统重新启动后启动：

$ sudo systemctl enable --now docker

• 可选地向Docker提供任何用户管理权限：

$ sudo usermod -aG docker SOMEUSERNAME

• 检查Docker版本：

$ docker --version

• 运行Docker“Hello-World”容器进行测试：

$ docker run hello-world
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 contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)