Raspberry Pi 4 compatible? Streaming interface?

Hi Nickolay,

its good to see you active with a new ASR project :-) As far as I remember we talked a bit back in the Sphinx4 days when I was working on [ILA](https://cmusphinx.github.io/2015/01/ila-voice-assistant/) ;-)
The follow-up project of ILA is [SEPIA](https://sepia-framework.github.io/) and I'm currently trying to figure out if Vosk fits in the picture (spoiler: it looks like ^^). Could you answer me 2 quick questions please:

- Does the Docker container work with Raspberry Pi 4? I've recently compiled Kaldi on the Pi4 to start some new experiments but it took me 3 trys and 10 hours each and I still need to clean up the Kaldi installation because it is an awful large ~10 GB Docker container now :-/. It would be great if I could switch to the Vosk container :-)

- Does the Vosk server require a full wav file before it can start transcribing? Optimally I'd like to stream and transcribe the file while the user is still speaking.

Thanks for any info and keep up the great work!
Florian