Is there a way to install a custom PPG image from private repo when using everest to create instances?

I have a custom PPG image based off of the Percona Docker PGDB Dockerfile which installs Paradedb pg_search extension and custom init scripts. I have the image hosted on our private container registry.

We would like to use that image when trying to create instances using Everest on Kubernetes.

Any help would be appreciated!

Cheers