Dockerize the project

In order to use Docker with the project, you must have installed docker-compose and have the project module packaged.

This are the steps:

foo@bar:~/taxi-booking $ mvn --projects config-service package spring-boot:repackage
foo@bar:~/taxi-booking $ cd docker
foo@bar:~/taxi-booking/docker $ docker-compose up

Due to lack of documentation, the main module of the project isn't dockerized, only the configuration module.