| 12345678910111213141516171819202122 | FROM debian:stretchENV container dockerENV DEBIAN_FRONTEND noninteractiveCOPY container.target /etc/systemd/system/container.targetRUN apt update && \    apt install -y systemd python locales && \    ln -sf /etc/systemd/system/container.target /etc/systemd/system/default.target && \    ln -sf /lib/systemd/systemd /sbin/init && \    apt-get clean && \    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \    localedef -i ru_RU -c -f UTF-8 -A /usr/share/locale/locale.alias ru_RU.UTF-8ENTRYPOINT ["/sbin/init"]ENV LANG ru_RU.utf8CMD ["--log-level=info"]STOPSIGNAL SIGRTMIN+3
 |