ntfy: Migrate from custom to appstore version

[random_eric]

Awesome!
How do I migrate from my version to the cloudron version?

[girish]

@random_eric Maybe clone your existing app to another location and try if cloudron update --app <domain> --appstore-id sh.ntfy.cloudronapp works. I haven't changed the config file format (intentionally, atleast)

[random_eric]

@girish
It ended up not working.
I didn't investigate it too much.
I just recreated the app and copied the database over.