Fail2Ban Issue

[lordvault]

Hi first, thanks for share your work with us.
Im using thins vestacp on a host VM, but looking the /var/log/auth.log i saw a lot of failures from Chinesse and russian machiness trying to access to the machine through SSH. I enable the fail2ban service to try to ban those IP but at this moment the fail2ban has none ip banned. I was doing some research and after check the rules for fail2ban, i found that we have the Fail2Ban v0.9.3 version and the latest one is 0.11.2 and on the relese notes i saw some bennefits for use a more recent version, and maibe a fix for the posible issue that im having.
As i check the fail2ban is limited by the Ubuntu version https://packages.ubuntu.com/search?keywords=fail2ban .
At this moment the vestacp dockerfile depends on the docker-hostingbase and this depends on phusion/baseimage:0.10.2 that keeps using 16.04.

Why keep using the phusion/baseimage:0.10.2 and not use the latest one ?

Again thanks 4 your job, i hope this comments helps to make a great and more robust tool for the community.