How do I use the docker image to display my webcam's input

[gino0717]

hi, I'm using the ubuntu and I would try to use this example to display the video from my webcam

I follow the Readme to build the docker
I follow the command and It doesn't work because of wrong image name

docker run -p 8000:8000 -t example-yuv-websocket-stream-exe

so I use

docker run -p 8000:8000 -t example-yuv-websocket-stream

I open the webpage in browser in http://127.0.0.1:8000/v0/cam/stream, the terminal display error message:

E |2021-12-03 08:00:40 1638518440168926| V4L-Grabber:Cannot identify '/dev/video0': No such file or directory (2)
E |2021-12-03 08:00:40 1638518440168955| V4L-Grabber:Cannot identify '/dev/video1': No such file or directory (2)
E |2021-12-03 08:00:40 1638518440168965| V4L-Grabber:Cannot identify '/dev/video2': No such file or directory (2)
E |2021-12-03 08:00:40 1638518440168973| Cam:Non of the tested /dev/video devices could be opened
W |2021-12-03 08:00:40 1638518440169004| [oatpp::web::server::HttpProcessor::processNextRequest()]:Warning. ConnectionUpgradeHandler not set!

it seems that the program cannot find the /dev/video
so I give it the path by using volume

docker run -p 8000:8000 -v='/dev/:/dev/' -t example-yuv-websocket-stream

then it shows

E |2021-12-03 08:13:05 1638519185420066| V4L-Grabber:Cannot identify '': No such file or directory (2)
E |2021-12-03 08:13:09 1638519189091845| V4L-Grabber:Cannot identify '': No such file or directory (2)

what should I do to run the webcam?

[lganzzzo]

@bamkrs , we need your assistance