diff --git a/.github/workflows/docker-delete.yml b/.github/workflows/docker-delete.yml
index ce74d48..058b087 100644
--- a/.github/workflows/docker-delete.yml
+++ b/.github/workflows/docker-delete.yml
@@ -10,6 +10,12 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      
       - name: Delete Docker image
         run: |
           TAG_NAME="${{ github.event.release.tag_name }}"
diff --git a/README.md b/README.md
index b28130b..e93f602 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 [![GitHub](https://img.shields.io/badge/GitHub-WrBug%2FPolyHermes-blue?logo=github)](https://github.com/WrBug/PolyHermes)
 [![Twitter](https://img.shields.io/badge/Twitter-@quant__tr-blue?logo=twitter)](https://x.com/quant_tr)
 
+> 🌐 **Language**: [English](README_EN.md) | 中文
+
 一个功能强大的 Polymarket 预测市场跟单交易系统，支持自动化跟单、多账户管理、实时订单推送和统计分析。
 
 ---
diff --git a/README_EN.md b/README_EN.md
index fb99a8f..6498642 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -3,6 +3,8 @@
 [![GitHub](https://img.shields.io/badge/GitHub-WrBug%2FPolyHermes-blue?logo=github)](https://github.com/WrBug/PolyHermes)
 [![Twitter](https://img.shields.io/badge/Twitter-@quant__tr-blue?logo=twitter)](https://x.com/quant_tr)
 
+> 🌐 **Language**: English | [中文](README.md)
+
 A powerful copy trading system for Polymarket prediction markets, supporting automated copy trading, multi-account management, real-time order push, and statistical analysis.
 
 ---
diff --git a/docker-compose.prod.env.example b/docker-compose.prod.env.example
index bbef8f3..3531365 100644
--- a/docker-compose.prod.env.example
+++ b/docker-compose.prod.env.example
@@ -35,15 +35,11 @@ POLYGON_RPC_URL=https://polygon-rpc.com
 # ============================================
 # 安全配置（⚠️ 必须修改，不能使用默认值）
 # ============================================
-# 生成随机密钥命令：
-#   openssl rand -hex 32  # 用于 ADMIN_RESET_PASSWORD_KEY
-#   openssl rand -hex 64  # 用于 JWT_SECRET
-
-JWT_SECRET=your-jwt-secret-key-here-change-in-production
-ADMIN_RESET_PASSWORD_KEY=your-admin-reset-key-here-change-in-production
+JWT_SECRET=change-me-in-production
+ADMIN_RESET_PASSWORD_KEY=change-me-in-production
 
 # ============================================
-# 加密密钥（可选，用于加密存储私钥和 API Key）
+# 加密密钥（用于加密存储私钥和 API Key）
 # ============================================
-# CRYPTO_SECRET_KEY=your-crypto-secret-key-here
+CRYPTO_SECRET_KEY=change-me-in-production