Support setting database port

[jessebot]

Hoi nextcloud/docker friends!

I wanted to inquiry about adding some env vars for database ports? Happy to submit the PR for setting postgresql/mysql ports via env vars, but I'm not entirely sure if it's supported upstream in nextcloud/server. Either way, I wanted to kick off the conversation here, so we can then maybe support it upstream in nextcloud/helm.

Please also see nextcloud/helm#632 for more info.

Thanks and kind regards!

[joshtrichards]

The port is just specified as part of the dbhost parameter in Nextcloud. I don't believe there's anything specific we need to do to support it in the image.

I haven't used an alternative port admittedly that I can recall, but I do use UNIX sockets a fair bit in my deploys. They're specified in a similar manner and I know MYSQL_HOST and POSTGRES_HOST already work well with the syntax for that.

[jessebot]

ok, great, than we can just document that upstream! There's no need to put any additional effort in here. Thanks for your prompt response! :) I'll close this now since it doesn't look like there's anything else needed, but feel free to reopen if you see it differently, and I'm happy to help out 🙏