I'd to install zabbix (4.0.3 version) proxy and/or agent on Ubuntu 12.04 (I know it's obsolete and should be not used). On web page there are debs only for 14.04, 16.04 and 18.04. If someone already build sub deb I'm very interested, if not could someone point me please to page with description how to do it? I've found https://zabbix.org/wiki/Docs/howto/rebuild_debs but I don't quite know how to use sources with current Zabbix version (4.0.3) to build deb on 12.04 machine.