apt cannot install PHP7.2 - attempting with 7.4 and having issues

[WGandy]

It seems that there are issues with the current installation instructions. I tried changing every reference to PHP7.2 over to PHP7.4 (the oldest supported PHP on Debian 11, I believe) and most everything appears to install correctly.
But I can't seem to get this to serve a webpage.

I'm just a newbie but I don't understand why a basic working instance can't be done with a docker-compose file and 1 or 2 config files. There IS a docker-compose file but taking it up seems to require a bunch of other folders and files that are only installed by running composer??

[marco6ps]

I have the same problem, and it requires me a higher mongodb version too. I've tried to fix problems upgrading to that versions, but in the end when i try 'doctrine:mongodb:schema:create' says 'No suitable servers found (serverSelectionTryOnce set): [Failed to resolve 'mongodb']'. If you could please check the installation guide and introduce more steps or info if needed, it would be great, cause i'm trying to learn about all of that but it's quite difficult for me to check every error.