kubeguard with AWS EKS

[aroundude]

To use guard with Github Token, need to configure Kubernetes API Server, which is --authentication-token-webhook-config-file.

However, there is no way to configure API server on AWS EKS as far as I know, becuase it's managed by AWS.

It seems like guard can configured and usable in AWS EKS if I look at this documents.
(https://appscode.com/products/guard/v0.7.1/guides/authenticator/aws_eks/)

But I can't find any ways to configure --authentication-token-webhook-config-file flag to EKS apiserver.
Is there any other ways to set up guard to EKS with github TOKEN?