docker-entrypoint.sh doesn't handle quoted environment variables very well

[warthog9]

if you pass a variable into docker via something like:

database_url="driver://username:password@url/path"

things get wonky as apparently the variable gets fed in as "" vs. . This obviously will cause problems when someone (I.E. crazy people like me) stick "'s of some sort around variables thinking that needs to happen.

I'll do up a patch to docker-entrypoint.sh to try and clean that up, or at least warn the 'why' it's going to fail instead of failing and the error not being entirely obvious.