Ctrl+C not passed to subprocesses properly

[ReubenFrankel]

Background

I have a used the EDK to build an extension (matatika_extension) that wraps Docker Compose.
I am using Python 3.7 on Ubuntu 22.04 LTS.

Expected behaviour

When I run matatika_extension invoke up (alias for docker compose up) and then cancel the process with Ctrl+C, I expect to see the procedure that stops the service containers.

^CGracefully stopping... (press Ctrl+C again to force)
Aborting on container exit...
[+] Running 3/3
 ⠿ Container matatika-ext-app-1      Stopped                                                                                                                           10.1s
 ⠿ Container matatika-ext-catalog-1  Stopped                                                                                                                           10.4s
 ⠿ Container matatika-ext-db-1       Stopped                                                                                                                            0.1s
canceled

Actual behaviour

Containers are not stopped once started before the extension process was cancelled (visible with docker ps). Cancelling the process immediately exits with the following message:

^C/home/linuxbrew/.linuxbrew/opt/python@3.7/lib/python3.7/asyncio/unix_events.py:878: RuntimeWarning: A loop is being detached from a child watcher with pending handlers
  RuntimeWarning)

Aborted!

Potential solution(s)

It seems like the SIGINT signal from Ctrl+C is not being passed the subprocess. Propagating this may fix the issue.