Fix OIDC_SCOPE Doc & Add Authentik Example

Author: torbenraab

docs/_media/authentik-provider-scopes.png

@@ -30,7 +30,7 @@ OIDC_SCOPE="openid"
 |OIDC_URL_AUTHORIZE|The url used to authorize your users|
 |OIDC_URL_ACCESS_TOKEN|The url used to get the access token|
 |OIDC_URL_RESOURCE_OWNER_DETAILS|The ur used to get the authenticated user details|
-|OIDC_SCOPE|The scopes that will be used to get information for your authenticated user. Separated by comma (,)|
+|OIDC_SCOPE|The scopes that will be used to get information for your authenticated user. Separated by comma Whitespace|
 
 ## Example - Keycloak
 
@@ -48,7 +48,7 @@ OIDC_REALM="YOUR_OIDC_REALM"
 OIDC_URL_AUTHORIZE="${OIDC_DISCOVERY_ENDPOINT}/realms/${OIDC_REALM}/protocol/openid-connect/auth"
 OIDC_URL_ACCESS_TOKEN="${OIDC_DISCOVERY_ENDPOINT}/realms/${OIDC_REALM}/protocol/openid-connect/token"
 OIDC_URL_RESOURCE_OWNER_DETAILS="${OIDC_DISCOVERY_ENDPOINT}/realms/${OIDC_REALM}/protocol/openid-connect/userinfo"
-OIDC_SCOPE="openid"
+OIDC_SCOPE="openid profile email"
 ```
 
 3. Make sure in your administration **General settings** you have enabled `Enable OIDC login?` flag:
@@ -59,8 +59,47 @@ OIDC_SCOPE="openid"
 
 ![oidc-connect.png](_media/oidc-connect.png)
 
+## Example - Authentik
+
+In this example we will use the Authentik Docker image, but feel free to use another OIDC provider.
+
+1. Follow the steps in the Authentik documentation for the Setup you like, here we used the docker-compose Setup: [https://goauthentik.io/docs/installation/docker-compose](https://goauthentik.io/docs/installation/docker-compose)
+2. Add a OpenID Property in Authentik
+Go to the Admin Panel under Customisation -> Property Mappings. Create a new Mapping as "Scope Mapping" with the following values:
+
+|Attribute|Value|
+|---|---|
+|Name|ex. Family_Name OpenID|
+|Scope|profile|
+|Description| |
+|Expression| ```return { "family_name": "" } ```|
+
+When creating a new OpenID Provider you have to go to "Advanced protocol settings" and select the previously named scope additionally.
+
+![authentik-provider-scopes.png](_media/authentik-provider-scopes.png)
+
+3. Configure the environment variables, in your `.env` file:
+
+```env
+OIDC_CLIENT_ID="YOUR_CLIENT_ID"
+OIDC_CLIENT_SECRET="YOUR_CLIENT_SECRET"
+OIDC_DISCOVERY_ENDPOINT="https://authentik.company"
+OIDC_REDIRECT_URI="${APP_URL}/oidc/callback"
+OIDC_URL_AUTHORIZE="${OIDC_DISCOVERY_ENDPOINT}/application/o/authorize/"
+OIDC_URL_ACCESS_TOKEN="${OIDC_DISCOVERY_ENDPOINT}/application/o/token/"
+OIDC_URL_RESOURCE_OWNER_DETAILS="${OIDC_DISCOVERY_ENDPOINT}/application/o/userinfo/"
+OIDC_SCOPE="openid profile email"
+```
+
+4. Make sure in your administration **General settings** you have enabled `Enable OIDC login?` flag:
+
+![settings.png](_media/settings.png)
+
+5. Your users can now click the button **OIDC Connect** in the login page:
+
+![oidc-connect.png](_media/oidc-connect.png)
+
 > Feel free to customize your login page, by enabling / disabling login sections:
 > - Form login
 > - Social login
 > - OIDC login
-