Adjust postgres image refs in examples to a well supported version

[MegadoomerX]

I find it curious that the Docker Compose examples contain a fixed version tag for MariaDB (mariadb:10.5) while a rolling release tag was chosen for the PostgreSQL container (postgres:alpine).

This is especially strange to me, as MariaDB is developed to be mostly cross-compatible in versions while PostgreSQL needs a manual database dump and rebuild on every major update. Also, the current MariaDB version 10.5 is out of date (currently 10.8.3 is the latest release).

Is there any reasoning for this that I'm unaware of?

[martadinata666]

there used to be some issue with 10.6 https://github.com/nextcloud/docker/issues/1492 , so it tagged for fixed version 10.5, but you can use latest or 10.8 nowadays.

[joshtrichards]

Hi @MegadoomerX - No. They're just examples. It takes a lot of work keeping them all up-to-date. It's also expected that those using them educate themselves on Docker basics and some thought into their environment's specific requirements. There's only so much we can do. :-) That said, this is a community project so you're welcome to submit PRs to try to clean some of them up a bit.