Ok I'll bite again.

Do you want a caddy service embedded with every web app you self host or are you running a single one serving all your apps?

From my understanding if you want acme http challenges to just work with let's encrypt you probably need to use a single, separated caddy to front all your apps.

In that case if I ship a caddy service pre configured to do TLS termination with my app it's just more trouble for you no?