Termux is great but every time I used i ran into issue because packages didn’t behave properly, needed some weird workaround to even install, some package required didn’t exist at all (it’s up to termux developer to port Linux package to termux).

I would be extremely cautious about running a website over something running in termux, you never know when it’s going to break.

One of the solution, without root, was to run a completely emulated Linux distribution through termux and then install packages on that distribution. Things would work just as fine as on a regular server albeit the loss on performance and increased energy expenditure, which is something the author seems to care about.

Android is great in the way you can do many things with it but it always sucks hard compared to what a real device ,not artificially locked down by Google, can do.