Dynamic port forward for ftp data channel

[standa4]

Hello,

I would like to ask how to resolve the situation that ftp in passive mode needs to listen on dynamically chosen port. This port is not forwarded by docker to the container. Did anyone tried to solve this issue?
Maybe it could be solved by modification of dionaea to have the range of expected ports and listen on random port from this range and this whole range would be mapped by docker 1:1 from the host to container. I don't want to map whole range 1024-65535. Some small subset would be sufficien I guess.
Or is there another solution?
Thank you,

Best regards,

Stanislav