Update Dockerfile

Dockerfile

@@ -1,11 +1,16 @@
-FROM node:18
+# syntax=docker/dockerfile:1
+
+FROM node:18-alpine
+ENV NODE_ENV=production
 
 WORKDIR /app
 
-RUN npm install express express-http-proxy
+COPY ["package.json", "package-lock.json*", "./"]
+
+RUN npm install --production
 
 COPY . .
 
-EXPOSE 7860
+EXPOSE 3000 8080
 
-CMD [ "node", "server.js" ]
+CMD ["npm", "start"]