Mandatory prerequisites
          If you use a different OS or you want to install them by yourself, please find below mandatory prerequisites list:
          •	ansible (minimum version 2.6) (in a multi-server architecture, it is only needed on your management machine).
          
          •	git (in a multi-server architecture, it is only needed on your management machine),
          •	docker-compose (minimum version 1.14) (in a multi-server architecture, it is only needed on your management machine),
          •	jq (in a multi-server architecture, it is only needed on your management machine),
          •	ntp
          •	sudo
          •	bzip2
          •	apache2 (only in multi-server environment)
          •	rsync
          •	sshpass
          •	conntrack
          •	crontabs
          •	ethtool
          •	gnupg (for Debian 10)