Fix gulp install - #23

Author: FlyersWeb

front-end/Dockerfile

@@ -3,8 +3,9 @@ FROM node:5
 ADD . /var/www
 WORKDIR /var/www
 
-RUN npm install
-RUN npm install -g gulp
+RUN npm install -g gulp-cli \
+  && rm -rf node_modules && rm -rf dist \
+  && npm install
 
 EXPOSE 3000
 CMD ["npm", "start"]