Updates to Docerfile and env for documentation

Dockerfile

@@ -3,7 +3,21 @@ FROM ruby:2.3.1
 # app dependencies
 RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
 
-ENV RAILS_ENV=development
+ENV RAILS_ENV=production \
+    APP_HOME=/usr/src/app \
+    BIGBLUEBUTTON_ENDPOINT=http://test-install.blindsidenetworks.com/bigbluebutton/ \
+    BIGBLUEBUTTON_SECRET=8cd8ef52e8e101574e400365b55e11a6
+
+
+RUN mkdir $APP_HOME
+WORKDIR $APP_HOME
+
+# Add the greenlight app 
+ADD . $APP_HOME
+
+# Install app dependencies
+RUN bundle install --without development test doc --deployment --clean
+RUN bundle exec rake assets:precompile --trace
+
+CMD ["scripts/default_start.sh"]
 
-# app directory
-RUN mkdir /usr/src/app