Randomizable Ports

Allow ports to be randomized in order to stop the possibility of a port collision, similar to what TestContainers offers. Unlike TestContainers, this is not mandatory.

The issue does not identify files, tests, or an entry point. Start by locating the Java code that configures container ports and compare its current behavior with the optional randomization requirement. Done means ports can be randomized to avoid collisions while remaining non-randomized by default.

Written by the indexing model from the issue text.