How can I create my own prover service for testinig that support my own custom issuer??

[rgouzal]

I have a Dapp that allow users to login with any provider using Auth0 that provides OIDC JWT token which then creates ZKP to sign txns via same Dapp securely. Currently running my dapp locally with a local SUI node network.
Here is what I have achieved so far:

• Redirect user to login via their OAuth provider account.
• Fetch the JWT from Auth0 after login.
• Call a self-hosted salt service to generate the user's salt, asks user to store salt in a safe place for next time authentication.
• Generate ephemeral key pairs.

Implementation I am missing / looking for:

• Use prover service API to generate the ZKP, passing the JWT, ephemeral public key, and salt.
• Assemble the zkLogin signature and submit the transaction to the local Sui node.

Now the issue is that I tried to run SUI prover docker image and use that but it specifies that it supports only certain iss (providers/issuers):

• Google
• Microsoft
• Twitch
• Facebook
• Apple
• Slack
  etc....

But it does not allow custom issuer like Auth0 I get error saying something like invalid issuer.
I know I can use the devnet and testnet but I would like to use the local node to learn more about the SUI ZKP auth architecture and its good for debugging.

Can anyone help or provide a solution for my own case?