Are kernel sources necessary within a funtoo container ?

[rspartz]

 

I have a host that is running Ubuntu and LXD. I've installed a container from public image that is funtoo 1.3. I then did and upgrade to 1.4 for the new container I created. In /var/lib/portage/world there was one entry from the public image /sys-kernel/debian-sources-lts

My question is, does a container need to have kernel sources installed? Since it's using the hosts kernel? I do understand that some packages may require kernel sources as dependency, but when the kernel is compiled it can not be installed. Is there a good 'best practices' on what do do with kernel sources within a container?