Dynamic display resize broken due to missing FreeRDP disp-client plugin in Docker image

Dynamic screen resize via RDP 8.1+ protocol extensions does not work. It apparently relies on FreeRDP plugin absent from guacd Docker image.

This is an excerpt from guacd container logs:

Loading Dynamic Virtual Channel disp
LoadLibraryA: /usr/lib/x86_64-linux-gnu/freerdp/disp-client.so: cannot open shared object file: No such file or directory

This may be not the only FreeRDP plugin missing from guacd Docker image. Docker image is expected to expose many features configured out of box.