Refresh of this Docker Stack

[iamk3]

Hi @frdmn

This is my first official large PR anyway. I found your stack and thought it was great! I wanted to build it myself to try it out and ran into issues. The main one being that bintray had been sunset by JFrog.

Updated:

• Speedtest container now using Debian 11 and following the new instructions put out by Ookla. I was able to build the container and push it to https://hub.docker.com/r/iamk3/docker-speedtest-grafana if you'd like to test it.
• Updated the docker-compose.yml to use the newest version of Grafana to mitigate some security issues that might exist in the older version.
• Updated the docker-compose.yml to use my current updated version of the speedtest container. I'd love for you to build and push it to yours as you are the originator!
• Updated index.js to now include Jitter stats
• Updated speedtest.json dashboard to display jitter and other additional stats.
• Updated README in a few places.

Lastly, I am not a dev and am still learning, so any feedback would be appreciated if needed! Thanks!

[SamHerts]

Great changes

[frdmn]

Sorry for the lack of attention on this - this looks superb! ❤️

I'll try to review this ASAP.

[iamk3]

Thank you for getting back! I realize that "real" jobs can get in the way. haha...