additional locale settings

install

@@ -79,6 +79,8 @@ wpaConf="/etc/wpa_supplicant/wpa_supplicant.conf"
 export DEBIAN_FRONTEND=noninteractive
 export APT_LISTCHANGES_FRONTEND=none
 export LANG=C.UTF-8
+export LANGUAGE=C
+export LC_ALL=C.UTF-8
 
 if [ -f /etc/armbian-release ]; then
   . /etc/armbian-release