Install and running yii2 from docker

Dear all,

I want to install an app in local network. I want to have a safe system so that nobody will not mess around with the app and the system. I think docker would be great solution to host my app. I am new to docker though.

I am stuck with ubuntu 16.04 server (php 5.6) to host docker. I installed docker as instructed here, https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-16-04

I clone the yii2 docker from here, https://github.com/yiisoft/yii2-docker.

But then, stuck. How to build the yii2 docker? is the docker include mysql and phpmyadmin?

please help,

Daniel