diff --git a/README.md b/README.md
index 618300a..08c444c 100644
--- a/README.md
+++ b/README.md
@@ -287,7 +287,7 @@ bun install
 
 ```bash
 # Start server với PM2
-pm2 start ecosystem.config.js --env production
+pm2 start ecosystem.config.cjs --env production
 
 # Hoặc start trực tiếp
 pm2 start server.js --name "charging-station-mock" --interpreter bun
@@ -368,7 +368,7 @@ sudo certbot renew --dry-run
 
 | Command | Mô tả |
 |---------|-------|
-| `pm2 start ecosystem.config.js` | Start với config file |
+| `pm2 start ecosystem.config.cjs` | Start với config file |
 | `pm2 start server.js --name app` | Start với tên custom |
 | `pm2 list` | Xem danh sách processes |
 | `pm2 logs [name]` | Xem logs |
@@ -386,9 +386,9 @@ sudo certbot renew --dry-run
 # Cách 1: Environment variable
 PORT=3200 pm2 start server.js --name "charging-station-mock" --interpreter bun
 
-# Cách 2: Sửa ecosystem.config.js
+# Cách 2: Sửa ecosystem.config.cjs
 # env_production: { PORT: 3200 }
-pm2 start ecosystem.config.js --env production
+pm2 start ecosystem.config.cjs --env production
 ```
 
 ---
diff --git a/ecosystem.config.cjs b/ecosystem.config.cjs
new file mode 100644
index 0000000..20d34c4
--- /dev/null
+++ b/ecosystem.config.cjs
@@ -0,0 +1,21 @@
+module.exports = {
+  apps: [
+    {
+      name: 'charging-station-mock',
+      script: 'server.js',
+      interpreter: 'bun',
+      instances: 1,
+      autorestart: true,
+      watch: false,
+      max_memory_restart: '500M',
+      env: {
+        NODE_ENV: 'development',
+        PORT: 3100,
+      },
+      env_production: {
+        NODE_ENV: 'production',
+        PORT: 3100,
+      },
+    },
+  ],
+};
diff --git a/ecosystem.config.js b/ecosystem.config.js
deleted file mode 100644
index 20d34c4..0000000
--- a/ecosystem.config.js
+++ /dev/null
@@ -1,21 +0,0 @@
-module.exports = {
-  apps: [
-    {
-      name: 'charging-station-mock',
-      script: 'server.js',
-      interpreter: 'bun',
-      instances: 1,
-      autorestart: true,
-      watch: false,
-      max_memory_restart: '500M',
-      env: {
-        NODE_ENV: 'development',
-        PORT: 3100,
-      },
-      env_production: {
-        NODE_ENV: 'production',
-        PORT: 3100,
-      },
-    },
-  ],
-};
diff --git a/ecosystem.config.js b/ecosystem.config.js
new file mode 120000
index 0000000..594728c
--- /dev/null
+++ b/ecosystem.config.js
@@ -0,0 +1 @@
+ecosystem.config.cjs
\ No newline at end of file
diff --git a/server.js b/server.js
index fd9ef41..d2ec54e 100644
--- a/server.js
+++ b/server.js
@@ -1,13 +1,17 @@
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import jsonServer from 'json-server';
 
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
 const server = jsonServer.create();
-const router = jsonServer.router(path.join(import.meta.dir, 'db.json'));
+const router = jsonServer.router(path.join(__dirname, 'db.json'));
 
 // Serve static files từ folder public (images, etc.)
 const middlewares = jsonServer.defaults({
   logger: true,
-  static: path.join(import.meta.dir, 'public'),
+  static: path.join(__dirname, 'public'),
 });
 
 const port = process.env.PORT || 3100;