Wow. I did the same thing, except that mine was written in Python/Django (and it was a crude hack) and that I've hosted it on bare metal.

I've used that for 3 years, then I've abandoned it because mainenance was a pain, and I haven't figured out (despite the code being there in the open!) how to get iOS app to log in - my JS was missing some magic call and all Firefox did show is an error message (not the served HTML page).

I've commented a bit about my experiences here: https://news.ycombinator.com/item?id=18448125