[dangus]

Why do I need to tinker with the internals of the container?

Even if I need to do that, the existence of a Docker image doesn’t stop me from making my own implementation as long as the application in question provides some kind of alternate distribution.

E.g., if there’s an RPM/DEB package, binary executable, JAR file, source code, etc, I can just make my own docker container with my own implementation and mess around with the internals as much as I want.