[pentium166]

I've only played around with LXC/LXD a little bit, what are some of the Ubuntu image issues? I did a quick google, but the first results seemed to be questions about hosting on Ubuntu rather than with the images themselves.

[silverwind]

In my experience, most issues are related to kernel interfaces which LXC disables inside unprivileged containers, paired with software that does not check if those interfaces are there/work before attempting to use them.

These issues can be observed in the official Ubuntu image and seem to get worse over time. I would recommend to just use VMs instead.