selenium standalone start failed when install single chrome driver

[wck821829906]

@vvo
Steps:

1. npm install selenium-standalone（6.15.4）
2. install just chrome driver with "--singleDriverInstall=chrome" configuration
   
3. start selenium standalone

Expected results:
standalone server should run successfully with single chrome driver

Actual results:
standalone server run failed, error "missing geckdriver" happens.

[mgrybyk]

Feel free to raise a fix for that!

Thanks

[christian-bromann]

@wck821829906 what would you suggest as an expected behavior here? I believe the idea of singleDriverInstall is to re-install a single driver. This package requires all drivers to be installed.

One solution would be to introduce a parameter called --singleDriverStart and only run Selenium Standalone with this single driver. What do you all think?

[christian-bromann]

Thanks @lthurr for tackling this. @wck821829906 please provide feedback if possible. If you see any issues or improvements please create a new issue, thank you!