root@curl -fsSL https://get.docker.com -o get-docker.sh

root@sh ./get-docker.sh

进化版

$ sudo apt-get update
$ sudo apt-get install curl
$ curl -fsSL https://get.docker.com/ | sh
$ sudo usermod -aG docker <your_username>

参考资料：https://docs.sevenbridges.com/docs/install-docker-on-linux