FROM python:3.11-slim-bookworm

# Only Redis + supervisor needed (no compilers — we use the public Piston API)
RUN apt-get update && apt-get install -y --no-install-recommends \
    redis-server \
    supervisor \
    curl \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

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

COPY . .

# Supervisor config
RUN mkdir -p /etc/supervisor/conf.d/ && \
    cp supervisord.conf /etc/supervisor/conf.d/supervisord.conf

ENV PYTHONUNBUFFERED=1

# Hugging Face Spaces port
EXPOSE 7860

CMD ["/usr/bin/supervisord", "-n", "-c", "/etc/supervisor/conf.d/supervisord.conf"]