Docker + Nextcloud = why is it so difficult?

TLDR: I consistently fail to set up Nextcloud on Docker. Halp pls?

Hi all - please help out a fellow self-hoster, if you have experience with Nextcloud. I have tried several approaches but I fail at various steps. Rather than describe my woes, I hope that I could get a "known good" configuration from the community?

What I have:

• a homelab server and a NAS, wired to a dedicated switch using priority ports.
• the server is running Linux, Docker, and NPM proxy which takes care of domains and SSL certs.

What I want:

• a docker-compose.yml that sets up Nextcloud without SSL. Just that.
• ideally but optionally, the compose file might include Nextcloud office-components and other neat additions that you have found useful.

Your comments, ideas, and other input will be much appreciated!!