Ability to mount a volume

[lorsatti]

New Feature: Mount a Volume

Like ./cm selenoid update --volumes ["/mnt/share:/home/selenium/Uploads:ro"], translating to a volume section for each browser version in browsers.json:

"volumes": [
  "/mnt/share:/home/selenium/Uploads:ro"
]

Use Case

It would be useful while testing browser extensions, or if a file for fake audio capture is needed in the container.
Example with ChromeOptions:

ChromeOptions options() {
    ChromeOptions opt = new ChromeOptions();
    //set path of extension directory
    opt.addArguments("load-extension=/home/selenium/Uploads/MyExtension_v0.1.2");
    //set path of .wav file for fake audio capture
    opt.addArguments("use-file-for-fake-audio-capture=/home/selenium/Uploads/speaker.wav");
    //...
    return opt;
}

[vania-pooh]

We consider cm a tool for quick installation with reasonable default settings suitable for 90% of cases. Using volumes is an advanced feature and is always available by editing browsers.json file. So saving this as a feature request but not sure when this is going to be implemented.