Adding comprehensive comments

gotify/docker-compose.yml

@@ -1,18 +1,29 @@
+# Gotify Push Notification Server Configuration
 services:
   gotify:
+    # Basic container configuration
     container_name: gotify
     image: ghcr.io/gotify/server:2.6.3
     restart: unless-stopped
+    
+    # Application environment configuration
     environment:
-      - TZ=${TZ}
-      - GOTIFY_REGISTRATION=${GOTIFY_REGISTRATION}
+      - TZ=${TZ}  # Timezone configuration
+      - GOTIFY_REGISTRATION=${GOTIFY_REGISTRATION}  # Allow/disallow new user registration
+    
+    # Persistent storage configuration
     volumes:
-      - ${APPDATA_PATH}/gotify/config:/app/data
+      - ${APPDATA_PATH}/gotify/config:/app/data  # Configuration and database storage
+    
+    # Network port configuration
     ports:
-      - ${PORT}:80
+      - ${PORT}:80  # Maps host port to Gotify web interface
+    
+    # Network configuration
     networks:
-      - frontend
+      - frontend  # Connects to frontend network
 
+# External network definition
 networks:
   frontend:
-    external: true
+    external: true  # Uses pre-existing frontend network