Webpack: add missing dir to dist during builds

Author: mrevjd

Dockerfile

@@ -6,4 +6,5 @@ RUN apk update ; apk add git
 # COPY package*.json /app
 # RUN npm install
 
-CMD [ "npm","run","build" ]
+CMD [ "npm","rebuild","node-sass" ]
+CMD [ "npm","run","build" ]