Hello maintainers,

I'm a little concerned this is some kind of obvious PEBKAC error, but I couldn't
find anything in the documentation that immediately jumped out at me.

Following the instructions in the FAQ for running debci tests, I get a failure
to build the lxc container with the following error:

# sudo debci setup
I: testbed setup [unstable/amd64/lxc]: starting at Tue Mar 31 09:45:21 EDT 2026
debian-distro-info: unknown distribution series `unstable'
ERROR: file /usr/share/lxc/templates/lxc-debian not found, provided by package lxc-templates

This is after a fresh installation of lxc on the machine with no prior lxc or
debci configuration.

Sincerely,

The actual error is this:

You need lxc-templates. It used to be recommended by lxc, but it's
deprecated upstream and we never managed to migrate away from it.

I will leave this open because we need to document this requirement
and/or check for it at runtime.