*How to build and run the whole thing  

  $ cd compose 

  $ docker-compose up

*How to use it

Go to localhost:6660 to see what the php server serves.
In the 

  compose/docker-compose.yaml 

file you can specify another port, too.

Under 

  overlay/opt


you find the directory which is on the container itself.
Build and change the project there, having the running container

To list your running container issue

  docker ps -a