Error: VideoCapture::New - failed to open capture running with docker

Newbie trying to use docker-compose build, Please help. Code was running ok without docker. Changed a few lines to run docker.

I set import like the examples `global.cv = require(' /usr/lib/node_modules/opencv4nodejs')` and I used `FROM justadudewhohacks/opencv-nodejs:node9-opencv3.4.1-contrib` in the Dockerfile. I also deleted the line from package.json file. But I get following error
```
const wCap = new cv.VideoCapture(0);
docker_seller | ^
docker_seller |
docker_seller | Error: VideoCapture::New - failed to open capture
docker_seller | at Object. (/seller/index.js:11:14)
docker_seller | at Module._compile (module.js:649:30)
docker_seller | at Object.Module._extensions..js (module.js:660:10)
docker_seller | at Module.load (module.js:561:32)
docker_seller | at tryModuleLoad (module.js:501:12)
docker_seller | at Function.Module._load (module.js:493:3)
docker_seller | at Function.Module.runMain (module.js:690:10)
docker_seller | at startup (bootstrap_node.js:194:16)
docker_seller | at bootstrap_node.js:666:3

```

*OpenCV version* v10.16.1

*With OpenCV-contrib?* (extra modules): yes/no?

*OS*: MacOSX

Start with the failing call at /seller/index.js:11, then inspect the Dockerfile, docker-compose configuration, and package.json changes described in the issue. Reproduce the Docker run and compare it with the non-Docker setup. Done means VideoCapture(0) opens successfully in the container without the reported error.

Written by the indexing model from the issue text.