docker compose v2

[meowcat]

The install.sh script uses docker-compose.
With the advent of "docker compose v2", docker-compose ceases to be a standalone executable, and docker compose is used instead. It should work more or less drop-in.

https://docs.docker.com/compose/compose-v2/
https://github.com/docker/compose

On Debian, apt-get install docker-compose still installs docker-compose "v1", but this is probably not desired; some recommend to just alias docker-compose to docker compose.

I find the communication regarding deprecation of "old" docker-compose a bit lacking, nevertheless we should probably implement it?

[meier-rene]

Thank you for the heads-up. I wasn't aware of this. Of course we will follow this transition. If its as easy as a simple drop-in I will adjust the documentation, or if some tweaks are required add them.

[meier-rene]

Fixed in dev.