I would like to automatically manage limits such as memory.max etc.
Is there a configuration file for a given container somewhere so that I can manage it?
In lxc this file is in /var/lib/lxc/{CTNAME}/config
Welcome!
Normally, these it is easier to set Resource Limits using Incus, Instance options - Incus documentation
Both LXC and Incus are based on the liblxc library, which likely means that may use those parameters from Incus into LXC.
I think what your looking for is located at /run/incus/{container name}/lxc.conf