How to obtain old Ubuntu container templates?

[wgshef]

I'm setting up my home lab, and am installing software that is only supported on certain versions of Ubuntu - specifically 16.04 and 18.04. I cannot find any container templates for these versions (I'd prefer to use 18.04).

I have this set up on a VirtualBox VM using the full desktop edition, but I'd rather go the container route if possible. If I can't find out, I guess that I will need to migrate this VM.

Is there a container template hiding out there somewhere that I can't find, or am I just out of luck?

Thanks

 

[fabian]

old distributions often don't work as containers because the kernel interfaces changed too much in the meantime (e.g., the introduction of cgroup v2 dropped support for a lot of old versions of distros). VMs are a much better fit for legacy infrastructure or retrocomputing..

 

[Johannes S]

Which Software we are talking about?

 

[ness1602]

For compatibility reasons it is always best to use VMs.