Allow configuring the `docker-compose` executable path

[jooola]

Describe the bug

On newer docker setups, docker-compose is part of docker under a docker sub commands: docker compose

This makes this library fail to find docker-compose when needed.

For now I have a little script but I expect this library to be able to change the executable name:

#!/usr/bin/env bash

exec docker compose "$@"

[alexanderankin]

linking #358