>No luck with linux/ppc64 yet, need to have a closer look. I got buildx running, and AFAICT this seems to be an omission in the moby/buildkit image that buildx is using.
ppc64 is missing in the lists here: https://github.com/moby/buildkit/blob/master/util/archutil/Dockerfile I'll see if I can patch it and make an updated buildkit image.
