Nextcloud Dockerfile

Hello,

I try to build Nextcloud with this Dockerfile

https://paste.dasnetzundich.de/view/ed2ff963

But it seems Nextcloud:latest use Ubuntu Focal (20.04) and I can’t install php7.3-dev and php7.4-dev. Has anyone tried it? Or which version use Ubuntu 19.04??

I get this error message:

https://paste.dasnetzundich.de/view/b86ce046