fix: use explicit port in filebrowser service port

Author: adrysn

filebrowser/service-defs/filebrowser.json

@@ -15,7 +15,7 @@
     "/usr/bin/filebrowser",
     "--noauth",
     "--address", "0.0.0.0",
-    "--port", "8080",
+    "--port", "{ports[0]}",
     "--database", "/home/work/filebrowser.db"
   ],
   "allowed_arguments": [