Openhab 3 - pulsaudio and bluetooth speaker

Hi, everybody!
I’m trying to setup a “bluetooth doorbell”. Openhab is running in docker.
:~$ play .mp3
from the host system works fine.
I’ve installed pulseaudio binding and it have found an audiosink item
where “5C_FB_7C_7F_4F_AC” is valid MAC of my audio device.
But trying to play
openhab> openhab:audio play doorbell.mp3
openhab> openhab:audio stream
I hear only the silence.
What am I doing wrong?