FROM debian:12.11-slim
RUN apt-get update && apt-get install -y --no-install-recommends openssh-server ca-certificates && rm -rf /var/lib/apt/lists/* \
    && mkdir -p /run/sshd && useradd -m -s /bin/bash linkport \
    && echo 'linkport:linkport-test-password' | chpasswd
COPY sshd_config /etc/ssh/sshd_config
CMD ["sh", "-c", "ssh-keygen -A && exec /usr/sbin/sshd -D -e"]
