start up mutliple *instances* of a Docker Compose setup

[s-light]

hello community,

i just had the idea to start multiple instances of my compose file -
for example to have one instance for every developer in the team..

and to distinct them i would create them just by passing different project names to the constructor like so:

docker = DockerClient(compose_project_name="my_custom_instance_name")

that is working - but now i am greeted by port already used messages 🙈
so i need to set the ports of the services..

→ what is the best way to do this?

one idea i had was to extract the ports to the .env file.
i thought i maybe can overwrite the envs - but that seems to be more complex than i thought..
i could create a new env file (maybe i can do an in memory file?!) and include both..
(untested)
or do some compose-override magic?!

maybe i am on the totally wrong way in general...

any ideas and hints are welcome..

sunny greetings
stefan

[s-light]

i have posted a question regarding this at
https://softwareengineering.stackexchange.com/questions/455319/python-on-whales-on-demand-setup-custom-docker-compose-instances-for-automate