Can a docker image based on Ubuntu run in Redhat?

Question

Read some PPTs, it seems that one container can run on different linux vendors. Is is true?

Answer 1

Yes. That's the main idea of docker.

It creates a "static container" in a chrooted env that is able to run on any linux because all the needed user-land dependencies are included in the image.

Since linux (the kernel) maintains a backward compatibility on system calls and their call-schemes, the idea can work across versions and even different distributions of Linux.

Of course, the binary architecture (say amd64) needs to be the same on the source and target system.