Updated dockerfile frontend

frontend/Dockerfile_prod

@@ -9,17 +9,27 @@ RUN npm install --silent
 
 COPY . .
 
-RUN npm run build
-
-# Production environment
-FROM node:14.17.6-alpine3.14
-
+# set working directory
 WORKDIR /app
 
-COPY --from=build /app/build .
+# Copies package.json and package-lock.json to Docker environment
+COPY package*.json ./
 
+# Installs all node packages
+RUN npm install
+
+# Copies everything over to Docker environment
+COPY . .
+
+# Build for production.
+RUN npm run build --production
+
+# Install `serve` to run the application.
 RUN npm install -g serve
 
+# Uses port which is used by the actual application
 EXPOSE 5000
 
-CMD ["serve", "-s", "build"]
+# Run application
+#CMD [ "npm", "start" ]
+CMD serve -s build