modified the code for setting the time zone

install/postgresql-v5-install.sh

@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break