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
Install ZFS
https://wiki.debian.org/ZFS#Installation
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 (currently no extra fee).
Proceed with Create ZFS Pool and following chapters.