fix: default NODE_ENV to development for testing phase

server/src/config.js

@@ -1,7 +1,7 @@
 require('dotenv').config()
 
 const config = {
-  nodeEnv: process.env.NODE_ENV || 'production',
+  nodeEnv: process.env.NODE_ENV || 'development',
   port: parseInt(process.env.PORT, 10) || 3000,
   region: process.env.TENCENT_REGION || 'ap-guangzhou',
   db: {