[kwlug-disc] Running multiple versions of Firefox on Linux

[Paul Nijjar]

Tragically, I need to run multiple versions of Firefox on the same
laptop for some debugging. What is the easiest acceptable way to do
this? Set up a Docker container for the alternative versions?
Something else?

I don't care about syncing user profiles -- everything runs in private
browsing mode. For now I only need to run Linux Firefox. I do need to
be able to control the versions of Firefox I am running. 

The distribution is Debian stable, if that matters. 

- Paul