Feature request: support for multiple groups for one container

[D-Konopka]

I am using one database with two http applications that rely on that database.
If i could assign my database two groups so it will be turned off only if these two application are turned off.

That feature would be great for all data stores, message queues e.t.c. that can be shared by multiple applications :)

[acouvreur]

Makes sense, this could be achieved using the names option.
But it's indeed a current limitation of the group feature. However, I see no issue on that part.

This feature will be added sometime, I can't guarantee you when :)

Feel free to open a PR