Update README.md

Author: boostchicken

README.md

@@ -31,7 +31,8 @@ Standard Image for base UDM, systemd removed
 
 ### UDM Pro / SE
 Base build with apparmor, systemd, devicemapper removal, and overlay kept
-Works on PRO on 2.x, for 1.x use the UDM Base still.
+Works on PRO on 2.x, for 1.x use the UDM Base still. 
+*Does not work on 3.x use nspawn-container*
 
 ## macvlan kernel module for UDR
 
@@ -41,18 +42,23 @@ at [macvlan-unifi-udr](https://github.com/whi-tw/macvlan-unifi-udr).
 
 ## General Tools
 
-### on-boot-script
+### on-boot-script-2.x
 
 Do this first. Enables `init.d` style scripts to run on every boot of your UDM.
 Includes examples to run `wpa-supplicant/eap-proxy` and/or `ntop-ng` on startup.
 Follow this [readme](https://github.com/unifi-utilities/unifios-utilities/blob/main/on-boot-script/README.md).
 
 **It enables complete customization of your UDM/P and fills the gap that config.gateway.json left behind.**
 
+### nspawn-container
+Enables containers on UniFiOS 3.x,  this replaces podman.
+
 ### podman-update
 
 Updates Podman, conmon, and runc to a recent version.
 This allows docker-compose usage as well.
+Works on PRO on 2.x, for 1.x use the UDM Base still. 
+*Does not working on 3.x use nspawn-container*
 
 ### container-common