Basic question on deployment

Hello

I am trying to put things in order and have a basic question:
For my learning project I defined “Docker Hosting” in my project settings. I read the guidance on how to deploy from wappler to firebase and I believe I can make this working, however, when the learning project also shows up containerized in my docker online account I com to the following question:

Is it best practice to follow the path to deploy to firebase (e.g. as outlined here or should I better look whether I can deploy from my docker online repository? I tried to find in my docker online account a button like “deploy to firebase” or “deploy to heroku” but didnt find such.

Can anyone explain to me why I do not find such a button in docker online account and why deploying to firebase directly is better?