SIGINT from docker is ignored

[fakuivan]

Read the title. These templates for issues are worse than most eulas.

My cli applications written with typer don't handle sigints sent by docker.

[jonaslb]

Can't reproduce, here it seems sigint causes a typer-based script to close just fine. You're probably not running it right in docker, or you have something else intercepting the signals.

Notably if you use COMMAND with certain images, they are not exec'd like you might expect, but there's some shell that wraps it and doesn't pass on the signals properly. To avoid it, always prefer the array version of ENTRYPOINT, and if you have some init script wrapper, remember to exec python3 (....) when you start your application at the end of it.

[fakuivan]

I'm using entrypoint myself and pointing it to the python script with the appropriate shebang, unless the official python containers from docker are doing something really weird I don't think this is an environment issue

https://github.com/fakuivan/docker-syncthing-system/blob/13efffdfe168260669e1fa3dc6eafc67066708ce/Dockerfile

[jonaslb]

Ok, I can see that you have a 466 line script with a ton of libraries and some threading stuff, too. Usually when submitting a bug to an upstream project, it's a good idea to have a minimal piece of code that demonstrates the issue very clearly. What you have is a "haystack" where you are claiming the "needle" is typer, but I don't really think that's true, or at least it is not demonstrated here in any way.

[fakuivan]

I've had this happen in other private repos where I also use typer, and I know that typer has some handling code for sigint, so I thought I could get some help here. I've tried to isolate to isolate the issue and it seems to be related with docker compose. Even this times out at 10s when running docker compose down:

services:
  alpine-sh:
    image: alpine
    entrypoint: [ "sh", "-c", "while true; do sleep 10; done;" ]

Thanks for the help. I'm closing this, as it doesn't seem to be related.