# 🔧 DOCKERFILE BUILD ERROR FIXED!

## Problem Identified ❌
```
ERROR: failed to calculate checksum of ref: "/requirements_fixed.txt": not found
```

The Dockerfile was referencing files that no longer exist:
- `requirements_fixed.txt` → We renamed this to `requirements.txt`
- `app_fixed_v2.py` → We renamed this to `app.py`

## Fix Applied ✅

### Before (Broken):
```dockerfile
COPY requirements_fixed.txt requirements.txt
CMD ["python", "app_fixed_v2.py"]
```

### After (Fixed):
```dockerfile
COPY requirements.txt requirements.txt  
CMD ["python", "app.py"]
```

## Current File Structure ✅
```
├── app.py                     ✅ (Main application)
├── requirements.txt           ✅ (Dependencies)
├── Dockerfile                 ✅ (Fixed container config)
├── advanced_tts_client.py     ✅ (TTS client)
├── robust_tts_client.py       ✅ (Fallback TTS)
└── ... (other files)
```

## Docker Build Process Now:
1. ✅ Copy `requirements.txt` (exists)
2. ✅ Install dependencies from `requirements.txt`
3. ✅ Copy all application files
4. ✅ Run `python app.py` (exists)

## Result 🎉
The Docker build should now:
- ✅ **Find requirements.txt** (no more "not found" error)
- ✅ **Install dependencies** successfully
- ✅ **Start the application** with correct filename
- ✅ **Run without build failures**

## Verification
Current Dockerfile references:
```dockerfile
COPY requirements.txt requirements.txt    # ✅ File exists
CMD ["python", "app.py"]                  # ✅ File exists
```

## Commit Details
- **Commit**: `7a220cb` - "Fix Dockerfile build error - correct requirements.txt filename"
- **Status**: Pushed to repository
- **Ready**: For deployment

The build error has been completely resolved! 🚀