title: Docker container isolation, does it care about underlying Linux OS?
body: <p>If I run Docker Engine and the same container on a set of different Linux distributions, will the container run in the same way? I am asking because in many cases applications depend on a specific Linux distribution for some resources, such as fonts. If my application running inside a Docker container depends on a font used in Ubuntu (and there may be many other dependencies), how is this managed? Will I need to install the font inside container, will I need to run Ubuntu inside the container running the application, or does the application use fonts from the underlying OS running the container?</p>