The following variables should be setup to enable 'auto' user creation -
```
[openid]
ENABLE_OPENID_SIGNIN = false
ENABLE_OPENID_SIGNUP = true
WHITELISTED_URIS = auth.domain.com
[service]
DISABLE_REGISTRATION = false
ALLOW_ONLY_EXTERNAL_REGISTRATION = true
SHOW_REGISTRATION_BUTTON = false
```
* 'ENABLE_OPENID_SIGNIN' - shows an additional OpenID section on the login page. Setting this to false removes it - this allows all auth to be instigated by Authelia.
* 'ENABLE_OPENID_SIGNUP' - this allows the OIDC user to sign up with Gitea, with the user passed from your Authelia login session.
* 'WHITELISTED_URIS' - this restricts the login/OIDC source to be Authelia
* 'DISABLE_REGISTRATION' - this disables general user (non-OIDC) registration
* 'ALLOW_ONLY_EXTERNAL_REGISTRATION' - this allows registration via OIDC only
* 'SHOW_REGISTRATION_BUTTON' - This hides the sign up button so manual registrations via the home page are not possible