On: Life of a Container (2020)

[jahlove]

Aren't centos:7 and centos:8 using different kernels?

[piperswe → jahlove]

Nope, they're just the CentOS 7 and CentOS 8 userlands running on top of the host kernel.

[chousuke → piperswe]

That's not necessarily true though; you could very well implement containers as lightweight VMs that use their own specific kernels, though the image itself doesn't contain any. Thinking in terms of containers vs VMs is missing the mark a bit.