Minor Dockerfile fix

Dockerfile_light

@@ -2,11 +2,11 @@ FROM node:4
 MAINTAINER Petr Sloup <petr.sloup@klokantech.com>
 
 RUN mkdir -p /usr/src/app
-COPY /light /usr/src/app
+COPY / /usr/src/app
 RUN cd /usr/src/app && npm install --production
 
 VOLUME /data
 WORKDIR /data
 
 EXPOSE 80
-CMD ["node", "/usr/src/app/", "-p", "80"]
+CMD ["node", "/usr/src/app/", "-p", "80"]