After some additiona investigation I figure out some additiona detail of this issue I figured out that most probably issue that I have is related to
[solved] Incorrect port detected for docker hosted server :

6.988 Info ServerRouter.cpp:547: Own address is IP ADDR:({2.215.69.43:13061 ...

My setup: docker image for aarch64 (branch stable, current version 2.0.10, https://hub.docker.com/r/factoriotools/factorio) on orange pi 5 plus with debian serve 6.1.42

I and my friend could connect to it and if someone is on the server anyone could connect, but if server is empty after some time ...