FROM python:3.10-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && \
    apt-get install -y --no-install-recommends gcc python3-dev && \
    rm -rf /var/lib/apt/lists/*

# Copy requirements first
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application
COPY . .

# Environment variables
ENV PORT=7860
ENV HF_TOKEN=""
ENV TELEGRAM_BOT_TOKEN=""
ENV TELEGRAM_CHAT_ID=""
ENV DEVICE="cpu"
ENV MAX_TOKENS=400

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

EXPOSE 7860

CMD ["python", "app.py"]