系統 - Docker - 如何跑多個相同Image的Container

參考資料：
https://stackoverflow.com/questions/48475611/how-to-install-multiple-ubuntu-images-in-the-same-host-via-docker

$ docker run --name app1 ubuntu /bin/bash
$ docker run --name app2 ubuntu /bin/bash
$ docker run --name app3 ubuntu /bin/bash