Jitsi on Docker from scratch?

Hi guys,
I have installed Jitsi meet in an server some days ago, but I already notice that I can have only jibri instance per VM. So, I found that there is a Jitsi on Docker option to have multiple instance of Jibri.
So, Should I delete the current installation of Jitsi and start from scrath with Jitsi on Docker?.
if yes, How I can unistall my current jitsi installation?
And, how many VMs I need to run Jitsi on Docker?, Actually I have two VMs. How can I used both?

Thanks in advance