FROM ubuntu:20.04
RUN export DEBIAN_FRONTEND=noninteractive && apt update -y && apt -y install xinetd python3 python3-pip

RUN useradd ctf

WORKDIR /app

RUN chown ctf /app

COPY challenge.py .
COPY numpymt.xinetd /etc/xinetd.d/numpymt

RUN pip install pycryptodome
RUN pip install numpy

CMD xinetd -dontfork