du, 245 in FileLight)./var00/lib/containers/storage/overlay is 366GB. It looks like maybe there is some duplication/remnants sticking around in here. There are 11 sub-folders in here that are around 9GB in size, and all contain installations for the same applications. bluebuild build locally and push the images to ghcr.rpm-ostree cleanup and bluebuild prune.
sudo podman system prune to clean that up