feat(config): ensure that the app loads correctly before the service starts

[vvanglro]

Summary

#2440
#2443

Extract the parts that will cause the process to exit and perform a check import before starting the service.

Checklist

• I understand that this PR may be closed in case there was no previous discussion. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.