buildx failed with: ERROR: failed to solve: failed to compute cache key: failed to calculate checksum of ref 5ee0a90d-9ba7-4120-a52c-7d8898402fd7::wrem9jenhjjq3u04xd535wmnm: failed to walk /var/lib/docker/tmp/buildkit-mount599967272/keycloak: lstat /var/lib/docker/tmp/buildkit-mount599967272/keycloak: no such file or directory