I’m not who you replied to, but there is a big stack of ansible playbooks for it that make it pretty pushbutton. They primarily use docker. This is what I used and I got it setup in like an hour.

Because its not really “1 plus 3”, its negative 1 plus 3 which is two. I know it seems a little weird but the minus sign is " tied" to the thing following it.

Description sounds like Saint Slime