Yes from a workflow using GitHub runners.
This could be it. GitHub bumped docker on their runners to 20.10.10
Docker change log for that release shows they dropped aufs: Docker Engine release notes | Docker Documentation
What’s the Balena plan for overlay? I read on GitHub the migration strategy to overlay is ongoing, but the post was raised 2 and a half years ago and it’s gradually meaning there aren’t many images left Balena supports.
The Linux vm option will now mean rolling back docker before 20.10.10, far from ideal.
It would be helpful to see a list of which images are overlay and which I should try to avoid, is that available?