FROM ubuntu:24.04

RUN apt-get update \
    && apt-get install -y --no-install-recommends openssh-server ca-certificates \
    && rm -rf /var/lib/apt/lists/*

RUN useradd -m -s /bin/sh bench \
    && mkdir -p /var/run/sshd /home/bench/.ssh /home/bench/.local/bin \
    && chown -R bench:bench /home/bench/.ssh /home/bench/.local

COPY dosh-server dosh-auth /usr/local/bin/
COPY bench_authorized_keys /home/bench/.ssh/authorized_keys

RUN chmod 0755 /usr/local/bin/dosh-server /usr/local/bin/dosh-auth \
    && chmod 0700 /home/bench/.ssh \
    && chmod 0600 /home/bench/.ssh/authorized_keys \
    && chown bench:bench /home/bench/.ssh/authorized_keys

EXPOSE 22/tcp 50000/udp

CMD ["/bin/sh", "-lc", "su - bench -c 'nohup /usr/local/bin/dosh-server serve >/tmp/dosh-server.log 2>&1 &' && exec /usr/sbin/sshd -D -e"]