__init__.py: Fix config startup check

[fliiiix]

gunicorn is not using main() it uses make_app via run.py.
Because of that we should check for the config file inside
make_app.
This is probably also true for other deployment options.

[fliiiix]

I hope there is a better solution than this

[ix5]

Hmm, I have not run into any issues with gunicorn and Isso yet. Can you provide a config that provokes the issue you're running into?

Please note that from a first glance, your change looks very sensible.

[fliiiix]

Good point i will add a way to reproduces this issue. I ran into that when testing the last pre-release.

[fliiiix]

Here is the example:

on master branch

$ gunicorn -b localhost:8080 -w 4 --preload isso.run             
2022-03-17 20:20:28,908 WARNING: unable to connect to your website, Isso will probably not work correctly. Please make sure, Isso can reach your website via HTTP(S).
[2022-03-17 20:20:28 +0100] [800014] [INFO] Starting gunicorn 20.1.0
[2022-03-17 20:20:28 +0100] [800014] [INFO] Listening at: http://127.0.0.1:8080 (800014)
[2022-03-17 20:20:28 +0100] [800014] [INFO] Using worker: sync
[2022-03-17 20:20:28 +0100] [800015] [INFO] Booting worker with pid: 800015
[2022-03-17 20:20:28 +0100] [800018] [INFO] Booting worker with pid: 800018
[2022-03-17 20:20:29 +0100] [800019] [INFO] Booting worker with pid: 800019
[2022-03-17 20:20:29 +0100] [800020] [INFO] Booting worker with pid: 800020

on this branch

gunicorn -b localhost:8080 -w 4 --preload isso.run
2022-03-17 20:21:22,747 ERROR: No website(s) configured, Isso won't work.

[ix5]

Looks like a sensible change. Thanks!