Is it possible to have a vanilla installation of Ubuntu 14.04 (Trusty) and run inside it containerized older Ubuntu versions that originally came with older kernels?
For example for 12.04 I'd assume the answer is yes as it has
linux-image packages for subsequent Ubuntu releases, such as
linux-image-generic-lts-quantal. For 10.04 that isn't the case, though, so I'm unsure. But is there documentation available that I can use to deduce what's okay to run?
The reason I am asking is because the kernel interface undergoes updates every now and then. However, it's sometimes beneficial to run newer versions of the distro and at the same time keeping a build environment based on a predecessor.