update alerter config to use docker configuration

forgejo-anon/index.md

@@ -92,6 +92,7 @@ Now that we laid out the justifications for this setup, let's set it up on our s
         environment:
           - USER_UID=1000
           - USER_GID=1000
+          - FORGEJO__webhook__ALLOWED_HOST_LIST="alerter" # add this to enable the alerter
         restart: always
         networks:
           - forgejo
@@ -399,8 +400,21 @@ As there is no way to send emails in a secure, anonymous way ForgeJo can be conf
 - Using the [simpleX](../simplexalerts/index.md) alerter tutorial, set up an instance listening on localhost:7897, configured with a group to receive your alerts. For the next part
 of this tutorial we will be using a group called "forgejotest"
 
+#### Docker-compose configuration
+
+add the following service entry:
+
+  alerter:
+    image: simplex-alerter:latest
+    restart: always
+    volumes:
+    - /my/alerter/data/folder:/simplex
+    - /my/alerter/data/folder:/alerterconfig
+
+
 ### Forgejo Configuration
 
+
 First, brows to the repository you want to activate notification for, then go to settings:
 
 ![](new_notif.png)