What registry are you using? I was having problems importing containers on v7.17.2 with the same error. You can try updating to v7.18 beta 6. That's what fixed it for me.
Edit - From another member of this forum it looks like due to docker hub api changes, it won't work unless you update to 7.18.
Hi,
I can confirm what you reported. After upgrading to version 7.18beta6, I was able to successfully pull the zerotier/zerotier:latest and cloudflare/cloudflared:latest containers from the registry at
https://registry-1.docker.io.
However, I am still experiencing issues with the alpine:latest container (
https://hub.docker.com/_/alpine/tags), and in the logs, I see the error:
"[cont] error response getting manifests: 401".
I have already opened a ticket with support to investigate this issue. That said, my priority is ensuring that ZeroTier and Cloudflare containers work correctly, rather than the Alpine container.