Prepare application for production deployment with Docker and PostgreSQL

Integrate PostgreSQL database support, add Docker deployment configurations, and implement health check endpoints.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ceced2fc-aa46-458d-ba87-ddd4b7bb1518
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/659922a9-0087-461c-90dd-6d9a58b81d4d/ceced2fc-aa46-458d-ba87-ddd4b7bb1518/ahHWEFX

server/index.ts

@@ -1,6 +1,7 @@
 import express, { type Request, Response, NextFunction } from "express";
 import { registerRoutes } from "./routes";
 import { setupVite, serveStatic, log } from "./vite";
+import { initializeDatabase } from "./db";
 
 const app = express();
 app.use(express.json());
@@ -37,6 +38,16 @@ app.use((req, res, next) => {
 });
 
 (async () => {
+  // Initialize database if using production mode or USE_DB is true
+  if (process.env.NODE_ENV === 'production' || process.env.USE_DB === 'true') {
+    try {
+      await initializeDatabase();
+    } catch (error) {
+      console.error('Failed to initialize database:', error);
+      process.exit(1);
+    }
+  }
+
   const server = await registerRoutes(app);
 
   app.use((err: any, _req: Request, res: Response, _next: NextFunction) => {