add volumes to sample compose scripts

readme.md

@@ -46,6 +46,8 @@ services:
       APPEND_DATE: true
     networks:
       - nastest
+    volumes:
+        - "backup:/backup"
 volumes:
   db:
     driver: local
@@ -57,6 +59,7 @@ networks:
 ```
 #### Backup to NAS
 For increased data security, it's recommended to store database backups on the NAS where they can take advantage of increased storage, automatic snapshots, & further backups.  
+The below example is identical to the one above, except `APPEND_DATE` has been set to `false` & the volume definition for `backup` has been modified.
 > [!IMPORTANT]
 > If you intend to keep regular snapshots of this backup on the file server, you should set APPEND_DATE to false 
 ```
@@ -80,6 +83,8 @@ services:
       APPEND_DATE: false
     networks:
       - nastest
+    volumes:
+        - "backup:/backup"
 volumes:
   db:
     driver: local