Deploy now using "noble" instead of "focal" even when configured to use "focal"

Site: https://wizardly-lalande-d43f29.netlify.app/

Trying to deploy a ruby site (based on slate docs)
Last deploy that worked properly was on May 12, and starts with this in the Initializing phase of the deploys log:

9:40:42 PM: Build ready to start
9:40:43 PM: build-image version: 7c55089ca7ee95f1335491e47eb760ebc1408fea (focal)
9:40:43 PM: buildbot version: 7c55089ca7ee95f1335491e47eb760ebc1408fea
...
9:41:03 PM: Attempting Ruby version 2.7.1, read from environment

Project configuration > Build image selection is set to:

Build image Ubuntu Focal 20.04

When trying to deploy a preview from a branch yesterday, the build failed. For some reason, it seems to be using noble (24.04) instead of focal (20.04) as build image, whether trying to deploy in a branch or the main production branch.

5:07:19 PM: build-image version: b4a14dfbcd8b107dda361870fa2c4c1e6a145af1 (noble)
5:07:19 PM: buildbot version: b4a14dfbcd8b107dda361870fa2c4c1e6a145af1

This is from today. Note the noble instead of focal.

We can probably work around this, and update some package versions to be compatible, but it seems odd that it’s not respecting the build image selection.

I haven’t found any similar issue with a few searches on the forum (or using the AI chatbot).

Focal is being deprecated anyways. I’d advise switching to noble.

I just ran into this today.

It’s not so easy for me to switch - please investigate why the build image configured (focal) is not respected.

The xenial to focal switch gave us time to prep and make sure things work fine before switching. Would appreciate a similar deprecation period for us to make the switch from focal to noble

@hrishikesh - any update on this?

Although there are no updates on this thread, I was hoping someone was working on this and so I would try a deploy every day to see if problem was fixed, but no luck.

Until today, today the deploy went through with focal image! :slight_smile:

Thanks netlify!