I found this github repo by following the links on docker hub from the ubuntu images to doijanky to Jenkins to here.

When reading any of the ubuntu containers pushed to dockerhub today (it says 2 hours ago) using the go containerd library, the following error occurs:

unsupported image-specific operation on artifact with type "application/vnd.docker.container.image.v1+json

This error happens for example with podman and apptainer (formerly known as singularity), but it doesn't happen with docker. Can you help narrow down what changed to figure out what is causing the problem? Would it be possible to back out the current tags until the problem is resolved?