How to spin up a subset of services from a docker-compose.yml

Is there a way to advise pytest-docker to spin up just a subset of all the services declared in the docker-compose.yml?

e.g. the same as the command equivalent:

`docker compose -f docker-compose.yml up --build mock1 mock2`

(when there might be also mock3 mock4... declared in docker-compose.yml)

Start with the docker compose command shown in the issue and inspect pytest-docker's service-startup configuration and documentation. Done means pytest-docker can select named services such as mock1 and mock2 while leaving other declared services stopped, with the behavior verified by tests.

Written by the indexing model from the issue text.