upgrade ruby version
Downgrade sass due to incompatibilities
Initial Docker configuration
Change deployment directory in app Dockerfile
Update nokogiri (it cannot take longer to build)
Fix asset:precompile command in Dockerfile
Use system libxml2 for Nokogiri

Greatly speeds up image construction
Fix application Dockerfile so rails connects to DB

RACK_ENV does *not* default to production :'(
Update README.md to reflect Docker progress
Initial nginx Dockerfile, no configuration

Following the instructions on
http://docs.docker.io/introduction/working-with-docker/
Add Unicorn config for docker
Switch to unicorn
In Docker, do not use app specified ruby
Reflect use of Unicorn under docker in README
Setup configuration for nginx
Add self-signed sample certificates for nginx
Export directories from docker rails_app
Updated nginx Dockerfile

Use custom configuration and install certificates.
Fix certificate name in nginx config
Update README to include nginx instructions