I wanted to know if all containers running on a particular Linux machine use same underlying host kernel. I read yes, they do use same underlying host's kernel and hence are light-weight and very fast.
I am not sure if different Linux flavors have same kernel at their heart.
If all of them have same kernel at the heart, then most probably my first assumption is right.
But, if all Linux flavors don't have same kernel... then my first assumption (that containers use host's kernel) must be wrong. Further, it must indicate that the image -using which containers are built- contain the whole OS including kernel.