In your example, the docker image makes a certain presumption - the presumption is that the OS that the host is going to run is Ubuntu-ish and 18.x generation-i

In your example, the docker image makes a certain presumption - the presumption is that the OS that the host is going to run is Ubuntu-ish and 18.x generation-ish and probably runs on a 64bit amd_64. So unless your code is very complicated, then probably by pulling Ubuntu 18.04 libraries and setting some linker rules things are going to work on most systems.