Docker not init correctly

In the Docker Compose file, we are using the var $PWD. This var is evaluated in the context that we run the docker-compose up -d command, but we do not need a different path in this docker file, we only need point the files and folders located in the opencell user home.

When we execute the command to run Docker with another user (as our personal user). Docker can't find the attached volumes and it creates them in the user home. This effect leaves the state described in issue #3 (closed).

Closes #3 (closed)