FROM debian:buster-slim

RUN apt update && \
    apt upgrade -y && \
    apt -y install openssh-server && \
    rm -rf /var/lib/apt/lists/* && \
    mkdir -p /run/sshd

COPY sshd_config /etc/ssh/sshd_config
COPY entrypoint /

EXPOSE 22

ENTRYPOINT ["/entrypoint"]