Extend docker name with OS version

[beta-ziliani]

Ref: https://forum.crystal-lang.org/t/official-docker-build-update-from-ubuntu-20-04-to-22-04-but-user-dont-know/5591

I think it should be added as alias (although it might make some mess if we duplicate it together with the semver part).

[zw963]

We can reference postgres or golang