Fix Dockerfile: correct requirements.txt path

Dockerfile

@@ -14,7 +14,7 @@ RUN apt-get update && apt-get install -y \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements first (for better caching)
-COPY requirements_hf.txt requirements.txt
+COPY requirements.txt requirements.txt
 
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt