Self hosted Gitpod how to use Integrated docker registry

Hi i have managed to get self hosted gitpod working partially when i run springboot petclinic example i get

Request startWorkspace failed with message: 7 PERMISSION_DENIED: cannot resolve workspace image: not authorized

i think issue is with docker registry can someone please how to enable integrated docker registry ? what to add in values.custom.yaml to make already present docker registry to work