Update README

README.md

@@ -175,8 +175,11 @@ If set to `true`, enables phpBB debug mode.
 
 ## Volumes
 
-No default volumes are predefined. You can mount everything you want
+There are predefined volumes in the image:
-inside `/phpbb/<something>`. For example, given that [ks.fhs.sh](https://ks.fhs.sh)
+
-was migrating into Docker from bare metal instance back in 2023, I
+- /phpbb/sqlite
-mounted the directories `files`, `store`, `ext`, `images` and
+- /phpbb/www/files
-`themes`, which proved working for more than a year at this point.
+- /phpbb/www/store
+- /phpbb/www/images/avatars/upload
+
+This list of volumes should be good enough for a forum that starts from scratch.