Interested to explore Fly Kubernetes after being accepted into the closed beta. The folks at Fly are innovative in their technology uses and, having been a long-time Kubernetes user, I was intrigued to learn that Fly.io has implemented Kubernetes atop Fly. My first Deployment failed: Authentication required to access image "ghcr.io/{image}" It was confirmed to me that FKS does not support pulling from private registries. The solution is pull-tag-push images to registry.