Update 'Main-Installer.sh'

Main-Installer.sh

@@ -130,10 +130,8 @@ sed -i 's/;preserve_hostname: false/preserve_hostname: true/g' /etc/cloud/cloud.
 timedatectl set-timezone Europe/Amsterdam
 sed -i 's/#/vm.swappiness=10/g' /etc/sysctl.conf
 sed -i 's/#/vm.vfs_cache_pressure=50/g' /etc/sysctl.conf
-cat <<EOF > /etc/crontab
-# m h dom mon dow user command
-0 3 * * 1 root apt update && apt upgrade -y
-EOF
+
+sed -i "\$a0 3 * * 1 root apt update && apt upgrade -y > /dev/null 2>&1" /etc/crontab
 systemctl restart cron
 ufw allow OpenSSH
 ufw allow 443/tcp