Update 'Dockerfile'

Dockerfile

@@ -1,11 +1,12 @@
-FROM node:17-alpine
+FROM node:12.18.1
+ENV NODE_ENV=production
 
 WORKDIR /app
 
-RUN npm install
+COPY ["bob_party/package.json", "bob_party/package-lock.json*", "."]
 
-COPY . .
+RUN npm install --production
 
-EXPOSE 3000
+COPY . .
 
-CMD ["npm", "start"]
+CMD [ "node", "server.js" ]