FROM ubuntu:16.04

COPY openssh-5.6p1/sshd /openssh/sshd-5.6p1
COPY openssh-8.0p1/sshd /openssh/sshd-8.0p1

COPY sshd_config* /etc/ssh/
COPY ssh_host_* /etc/ssh/
COPY moduli_1024 /usr/local/etc/moduli

COPY debug.sh /debug.sh

RUN apt update 2> /dev/null
RUN apt install -y libssl-dev strace rsyslog 2> /dev/null
RUN apt clean 2> /dev/null
RUN useradd -s /bin/false sshd
RUN mkdir /var/empty

EXPOSE 22