How to use read replicas in self-hosted supabase instance?

[thurahtetaung]

I have a self-hosted supabase instance deployed in Kubernetes, with Cloudnative Postgres (CNPG) as the database. CNPG supports read-only endpoints and I would like to use read replicas on supabase when applicable. Currently, I am deploying the supabase services with configs very similar to the provided docker-compose so every service that need database access is only using the read/write endpoints. I would like guidance or documentation on how to integrate read replicas to them, as I have seen they are possible on supabase cloud so I think it should have an option to do similarly in self-hosted.