[Enhancement] Use docker extends instead of docker-compose.override.yml

[edevosc2c]

I think we should use docker extends functionalities instead of using .override file for having a separate docker-compose.yml: https://docs.docker.com/compose/multiple-compose-files/extends/

docker-compose.override.yml was not meant to be used for having multiple docker-compose for the same docker-compose project.

override file could be used for overriding the docker-compose without touching the main docker-compose.yml file, this would be easier to upgrade to a newer georchestra version, but currently we can't use this functionality.