This is an roundition of https://gist.github.com/acj/3cb5674670e6145fa4f355b3239165c7 which got a bit messy
- Create a LXC container through the Proxmox web interface (ie.: ubuntu.23-10-lts)
- untick "unpriviledged" container
- in memory, set swap to 1024
- set mem to at least 4096
- in network, make sure you assign static ip-adress to the container
- create container but don't start it.