Fix Dockerfile: use correct requirements.txt path

Dockerfile

@@ -14,7 +14,7 @@ ENV PATH="/home/user/.local/bin:$PATH"
 WORKDIR /app
 
 # Copiar requirements y instalar dependencias
-COPY --chown=user ./requirements_hf.txt requirements.txt
+COPY --chown=user ./requirements.txt requirements.txt
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
 # Copiar archivos de la aplicación