Update Dockerfile

Dockerfile

@@ -1,13 +1,26 @@
-FROM node:18
+# Build stage
+FROM node:20-alpine AS build
 
 WORKDIR /app
 
 COPY package*.json ./
-
 RUN npm ci
 
 COPY . .
-
 RUN npm run build
 
-CMD ["node", "dist/main"]
+# Production stage
+FROM node:20-alpine AS production
+
+WORKDIR /app
+
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/node_modules ./node_modules
+COPY package*.json ./
+
+ENV NODE_ENV production
+ENV PORT 7860
+
+EXPOSE 7860
+
+CMD ["npm", "run", "start:prod"]