Error: VideoCapture::New - failed to open capture with Docker and http stream

So I've been trying to get this to work in Docker for a few days now, but no matter what I keep getting this error:
`Error: VideoCapture::New - failed to open capture`
which originates from trying to read an http stream from an IP camera:
`new cv.VideoCapture('http://10.134.130.94/axis-cgi/mjpg/video.cgi');`

This worked without issue with Windows 10. I'm also able to ping the IP address and make a Curl request from inside the container. So I've concluded this is probably an issue with the build process. This was my original Dockerfile:

```
FROM node:10
WORKDIR /app
RUN apt-get update && apt-get -y install cmake
COPY package*.json ./
RUN npm i --only=prod
COPY . .
EXPOSE 9452
EXPOSE 9453
CMD ["npm", "start"]
```
I've also tried installing additional ffmeg packages:
`apt-get install cmake ffmpeg && apt-get install libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libavresample-dev -y`
I also tried using the [Docker build script in the repository](https://github.com/justadudewhohacks/opencv4nodejs-docker-images/tree/master/opencv-nodejs).

Has anyone been able to successfully use this with Docker, especially with http streams?

Start with the Dockerfile shown in the issue and compare it with the repository's opencv-nodejs Docker build script. Reproduce the `cv.VideoCapture` HTTP-stream failure inside Docker, then determine whether a project-level build or image change is needed; completion requires a confirmed working configuration or a documented diagnosis.

Written by the indexing model from the issue text.