Add vrpRouting

[dkastl]

There is a new project in pgRouting Github organisation: vrpRouting @krashish8 and I thought it would be nice to have it available via Docker.

vrpRouting has the dependency Vroom, which also can be run through Docker.

This brought up the question, if it is better add vrpRouting to existing Docker images or have its own one.

@cayetanobv , what is your opinion? My current preference would be to add it to docker-pgrouting. What do you think would be best?

[cvvergara]

Mine is to make a docker-vrprouting