Alternative: Setup Pool and Service on plain Debian or Ubuntu
First install Debian or Ubuntu
https://www.debian.org/CD/netinst/index.en.html
https://ubuntu.com/tutorials/install-ubuntu-desktop#1-overview
Only user and group ids are different when not using LXC. Simply change them after prefill. Otherwise it will be changed by us and delay deployment (no extra fee).
Proceed with following chapters.