# Use phusion/baseimage as base image. To make your builds reproducible, make
# sure you lock down to a specific version, not to `latest`!
FROM phusion/baseimage:<VERSION>

# Remove authentication rights for insecure_key.
RUN rm -f /root/.ssh/authorized_keys /home/*/.ssh/authorized_keys

# Use baseimage-docker's init process.
CMD ["/sbin/my_init"]

# ...put other build instructions here...

# Clean up APT when done.
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*