Docker support for platform-agnostic deploy script

[ebigram]

👋 As I was following the setup tutorial, while I was able to get it working without too much friction, it occured to me my experience may not be typical with all operating systems at my disposal, and frankly a lot of mileage debugging minor issues working out of WSL. Although there wasn't anything that was truly a blocker, it also was quite a bit more work than some PnP game engine repos out there. Also, you have to pull quite a bit of tooling on your machine you might be reluctant to just to take Indigo out for a spin.

It might make more sense when the development cycle becomes more stabilized, as it can be a moving target at this point; but looking ahead, it'll probably help promoting adoption if there was a "push-button" mechanism to get a simple initial dev environment online. I'd be happy to volunteer to do so when such an effort makes sense, just putting this here in the interim as a reminder. ✌️

[davesmith00000]

Not docker, but I have just added a very simple nix shell.