FROM python:3.11-slim

# HF Spaces docker SDK expects the app to listen on $PORT (default 7860)
ENV PORT=7860 \
    PYTHONUNBUFFERED=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

WORKDIR /app

# Install Python deps first for layer caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application source
COPY . .

EXPOSE 7860

CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT:-7860}"]