Added condition to create 'lpadmin' group if missing

post-inst.sh

@@ -88,6 +88,10 @@ EOF
 		audio,cdrom,dip,floppy,wheel,video,dialout \
 		${USERNAME}
 else
+	if [[ -z "$(cat /etc/group | grep 'lpadmin')" ]]; then
+		groupadd --gid 108 lpadmin
+	fi
+
 	usermod \
 		-a \
 		-G \