commit build files because of memory leak during npm install

.gitignore

@@ -1,2 +1 @@
 node_modules
-dist

Dockerfile

@@ -4,10 +4,9 @@ RUN mkdir -p /frontend
 WORKDIR /frontend
 
 COPY package.json /frontend/
-RUN npm install
+RUN npm install --production
 
 COPY . /frontend
-RUN npm run build
 
 EXPOSE 8080
 CMD [ "npm", "start" ]