You can run the underlying single static binary as a service any non-docker way you like. Your applications would be talking to it over a socket using a known

You can run the underlying single static binary as a service any non-docker way you like. Your applications would be talking to it over a socket using a known and documented protocol so the implementation language isn't something the client code should be expected to need to care about at all. Given those two facts, I genuinely don't understand what your concerns are here?