FROM ubuntu:focal

# install sshd
RUN set -xe && \
	apt update && \
	apt install -y openssh-server curl zstd && \
	apt clean

# configure system
RUN set -xe && \
	mkdir /var/run/sshd && \
	curl https://crls.yandex.net/allCAs.pem >> /etc/ssl/certs/ca-certificates.crt

ADD start.sh /start.sh
ADD etc /etc

CMD ["/start.sh"]
