Results 6 issues of Brock R

Added the newly available environment variables used to change the data staleness to the README. Signed-off-by: Brock Renninger

Added to README, setting user to `docker run` command when autobuild is not enabled. Spaced out the docker run command to be a little more clear when reading.

This should cover: https://github.com/imartinez/privateGPT/issues/710

**Is your feature request related to a problem? Please describe.** I have more than the default number of threads (4) available for processing. I'd like to be able to use...

enhancement

You have your API key stored in the code: https://github.com/Jaredk3nt/homepage/blob/master/index.html#L65 I'm not sure yet how that should be separated, but it is worth noting.