feat: configure dotenv path for different environments in translate route

This commit updates the translate.ts file to dynamically set the path for the .env file based on the current environment development or production. This ensures that the application can correctly load

Author: ryota-murakami

server/routes/translate.ts

@@ -1,7 +1,19 @@
+import path from 'node:path'
+
 import express from 'express'
 import type { Router } from 'express'
 import OpenAI from 'openai'
 
+const env = process.env.NODE_ENV || 'development'
+const isProd = env === 'production'
+// .env file path resolve different between dev and production.
+// dev: projectRoot/.env production: projectRoot/server_build/.env
+require('dotenv').config({
+  path: isProd
+    ? path.join(__dirname, './../../../.env')
+    : path.join(__dirname, '../../.env'),
+})
+
 const router: Router = express.Router()
 
 // Initialize OpenAI client