@tk @quad Debian is a good second choice. Definitely more up to date than CentOS, but still lags behind Ubuntu greatly.

If I were you I'd just pull the plug, go full on with Alpine and see where it takes me. Perhaps not for the whole infrastructure, but as a small experiment.

I've been using Alpine for my Nginx loadbalancer and my mail server, and everything seems to be running smoothly.

Granted, Nginx is pretty standard and so is the mail server, but still.