buildx failed with: ERROR: failed to build: failed to solve: harbor.diamond.ac.uk/dockerhub-cache/dials/dials:latest: failed to resolve source metadata for harbor.diamond.ac.uk/dockerhub-cache/dials/dials:latest: failed to do request: Head "https://harbor.diamond.ac.uk/v2/dockerhub-cache/dials/dials/manifests/latest": dial tcp: lookup harbor.diamond.ac.uk on 168.63.129.16:53: no such host