FROM debian:bookworm-slim
RUN apt-get update && apt-get install -y --no-install-recommends \
    python3 python3-libtorrent bind9 bind9-utils dnsutils curl ca-certificates \
    && rm -rf /var/lib/apt/lists/*
ENV PYTHONUNBUFFERED=1 PYTHONDONTWRITEBYTECODE=1
WORKDIR /lab
CMD ["sleep", "infinity"]