FROM python:3.11-slim

# Directorio de trabajo
WORKDIR /app

# Dependencias del sistema
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Instalar dependencias Python (PyTorch CPU para menor tamaño)
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir torch==2.10.0 --index-url https://download.pytorch.org/whl/cpu && \
    pip install --no-cache-dir -r requirements.txt

# Copiar código del backend
COPY . .

# HF Spaces usa el puerto 7860 por defecto
EXPOSE 7860

# Ejecutar FastAPI con Uvicorn
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]