SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

I'm self hosting supertokens using the postgres docker image, what's the env var for supply an API key that the backend config uses?

```
    supertokens: {
      connectionURI: process.env.NEXT_SUPERTOKENS_CONNECTION_URI,
      apiKey: process.env.NEXT_SUPERTOKENS_APIKEY, <-- this one
    },
```

Looking at the repo - https://github.com/supertokens/supertokens-docker-postgresql - I see API_KEYS? is that it?

See this https://supertokens.com/docs/thirdpartyemailpassword/common-customizations/core/api-keys

Yep, that's what I was looking for, thanks!