Environment variables should by default be disabled, since they are
optional and need further configuration by the user before enabling.
Readme was updated to reflect this approach, as well as moving the
documentation for the variables a bit lower and properly linking to them
in other areas of the readme.
* Ignore venv when building docker file
* Remove reference to 8888 port
It wasn't really used anywhere, and setting it to 5000 everywhere removes ambiguity, and makes things easier to track and reason about
* Use waitress rather than Flask's built in web server
It's not production grade
* Actually add waitress to requirements
Woops!
Ben Busby