Task/document ENABLE_FEATURE_AUTH_TOKEN environment variable

* add ENABLE_FEATURE_AUTH_TOKEN to README.md

README.md

@@ -108,8 +108,9 @@ We provide official container images hosted on [Docker Hub](https://hub.docker.c
 #### OpenID Connect OIDC (Experimental)
 
 | Name                        | Type                  | Default Value                        | Description                                                                                            |
-| -------------------------- | --------------------- | ------------------------------------ | ---------------------------------------------------------------------------------------------------- |
+| --------------------------- | --------------------- | ------------------------------------ | ------------------------------------------------------------------------------------------------------ |
 | `ENABLE_FEATURE_AUTH_OIDC`  | `boolean` (optional)  | `false`                              | Enables _OpenID Connect_ authentication                                                                |
+| `ENABLE_FEATURE_AUTH_TOKEN` | `boolean` (optional)  | `true`                               | Enables auth token login and might be disabled with OIDC authentication enabled                        |
 | `OIDC_AUTHORIZATION_URL`    | `string` (optional)   |                                      | Manual override for the OIDC authorization endpoint (falls back to the discovery from the issuer)      |
 | `OIDC_CALLBACK_URL`         | `string` (optional)   | `${ROOT_URL}/api/auth/oidc/callback` | The OIDC callback URL                                                                                  |
 | `OIDC_CLIENT_ID`            | `string`              |                                      | The OIDC client ID                                                                                     |