Bug: Docker container - unable to find webcam

[Saharsh1005]

Upon running the app from a docker container, the app is unable to find the webcam.

$ docker run -p 5000:5000 human_nod
[ WARN:0@1.352] global cap_v4l.cpp:997 open VIDEOIO(V4L2:/dev/video0): can't open camera by index
[ERROR:0@1.358] global obsensor_uvc_stream_channel.cpp:159 getStreamChannelGroup Camera index out of range
Traceback (most recent call last):
  File "web/app.py", line 42, in <module>
    socketio.run(app, debug=True)
  File "/usr/local/lib/python3.8/site-packages/flask_socketio/__init__.py", line 640, in run
    raise RuntimeError('The Werkzeug web server is not '
RuntimeError: The Werkzeug web server is not designed to run in production. Pass allow_unsafe_werkzeug=True to the run() method to disable this error.

Try: docker run -it --rm --device=/dev/video0 -p 5000:5000 my-flask-app

docker: Error response from daemon: error gathering device information while adding custom device "/dev/video0": no such file or directory.