fix: use env var for db url

packages/web/src/lib/db/index.ts

@@ -2,7 +2,7 @@ import * as schema from './schema'
 import { drizzle } from 'drizzle-orm/postgres-js';
 import postgres from 'postgres';
 
-const client = postgres('postgresql://postgres:postgres@db:5432/db');
+const client = postgres(process.env.DATABASE_URL!);
 export const db = drizzle(client, { schema });