FROM ubuntu:16.04 RUN echo "#!/bin/sh\nexit 101" > /usr/sbin/policy-rc.d ADD ./run.sh /tmp/run.sh RUN bash /tmp/run.sh && rm /tmp/run.sh ADD ./my_init /usr/sbin/my_init RUN chmod +x /usr/sbin/my_init CMD /usr/sbin/my_init