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FROM alpine
RUN apk add --update git openssh \
&& rm -rf /tmp/* /var/cache/apk/*
RUN ssh-keygen -A
# creates locked password
RUN adduser -D -u 500 ist
# unlock and disable password
RUN passwd -ud ist
RUN echo "PasswordAuthentication no" >> /etc/ssh/sshd_config
EXPOSE 22
# mount server .ssh/authorized keys as volume in start command
CMD ["/usr/sbin/sshd","-D"]
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