diff --git a/README.md b/README.md
index 21b3191..1d825c1 100644
--- a/README.md
+++ b/README.md
@@ -101,3 +101,37 @@ python download_and_compare.py
 ```
 
 The script will automatically load your `.env` file for local testing.
+
+## Troubleshooting
+
+### Git Authentication Issues
+
+If you encounter authentication errors like "could not read Username", try these steps:
+
+1. **Verify your `.env` file** contains all required variables:
+   ```bash
+   GIT_REPO_URL=https://github.com/yourusername/yourrepo.git
+   GIT_USERNAME=yourusername
+   GIT_EMAIL=your.email@example.com
+   GITHUB_TOKEN=ghp_your_token_here
+   ```
+
+2. **Test Git configuration** in the container:
+   ```bash
+   docker-compose run --rm download-compare python test_git_config.py
+   ```
+
+3. **Check Personal Access Token permissions**:
+   - Ensure the token has `repo` scope
+   - Verify the token hasn't expired
+   - Check that the token belongs to the correct GitHub account
+
+4. **Verify repository access**:
+   - Ensure your GitHub account has access to the repository
+   - Check if the repository is private and requires authentication
+
+### Common Issues
+
+- **"No such device or address"**: Usually means Git is trying to prompt for credentials interactively
+- **"Authentication failed"**: Check your Personal Access Token and repository permissions
+- **"Repository not found"**: Verify the repository URL and your access permissions
diff --git a/docker-compose.yml b/docker-compose.yml
index 16a4508..ce14b5b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -8,7 +8,7 @@ services:
       - GIT_USERNAME=${GIT_USERNAME}
       - GIT_EMAIL=${GIT_EMAIL}
       - GIT_BRANCH=${GIT_BRANCH:-main}
+      - GITHUB_TOKEN=${GITHUB_TOKEN}
     volumes:
-      - ./data:/app/data
-      - ./.git:/app/.git
+      - .:/app
     working_dir: /app
diff --git a/download_and_compare.py b/download_and_compare.py
index 3a0712c..737fccf 100644
--- a/download_and_compare.py
+++ b/download_and_compare.py
@@ -58,13 +58,44 @@ def setup_git_repo():
     
     return True
 
+def verify_git_remote():
+    result = subprocess.run("git remote -v", shell=True, capture_output=True, text=True, cwd="/app")
+    if result.returncode != 0:
+        print("Error checking Git remote configuration")
+        return False
+    
+    remote_output = result.stdout.strip()
+    if not remote_output:
+        print("No Git remote configured")
+        return False
+    
+    print(f"Git remote configuration: {remote_output}")
+    return True
+
 def commit_and_push_changes():
     if not os.path.exists("/app/.git"):
         return False
     
+    if not verify_git_remote():
+        print("Git remote not properly configured")
+        return False
+    
     try:
         run_git_command("git add .")
         run_git_command("git commit -m 'Update language files'")
+        
+        github_token = os.environ.get('GITHUB_TOKEN')
+        if github_token:
+            git_repo_url = os.environ.get('GIT_REPO_URL')
+            git_username = os.environ.get('GIT_USERNAME')
+            if git_repo_url.startswith('https://'):
+                auth_url = git_repo_url.replace('https://', f'https://{git_username}:{github_token}@')
+                print(f"Setting authenticated remote URL: {auth_url}")
+                run_git_command(f"git remote set-url origin {auth_url}")
+                
+                print("Updated Git remote configuration:")
+                run_git_command("git remote -v")
+        
         run_git_command("git push origin HEAD")
         print("Changes committed and pushed to Git repository")
         return True
diff --git a/test_git_config.py b/test_git_config.py
new file mode 100644
index 0000000..50be94a
--- /dev/null
+++ b/test_git_config.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+import os
+import subprocess
+from dotenv import load_dotenv
+
+load_dotenv()
+
+def test_git_config():
+    print("=== Git Configuration Test ===")
+    print(f"Working directory: {os.getcwd()}")
+    print(f"Git repo exists: {os.path.exists('.git')}")
+    
+    if os.path.exists('.git'):
+        print("\n=== Git Remote Configuration ===")
+        result = subprocess.run("git remote -v", shell=True, capture_output=True, text=True)
+        if result.returncode == 0:
+            print(result.stdout)
+        else:
+            print(f"Error: {result.stderr}")
+        
+        print("\n=== Git Config ===")
+        subprocess.run("git config --list", shell=True)
+        
+        print("\n=== Environment Variables ===")
+        git_vars = ['GIT_REPO_URL', 'GIT_USERNAME', 'GIT_EMAIL', 'GITHUB_TOKEN']
+        for var in git_vars:
+            value = os.environ.get(var)
+            if value:
+                if 'TOKEN' in var:
+                    print(f"{var}: {value[:10]}...")
+                else:
+                    print(f"{var}: {value}")
+            else:
+                print(f"{var}: Not set")
+
+if __name__ == "__main__":
+    test_git_config()