.docker/post-install-cleanup.sh
#!/bin/bash
set -e
printf "\n[-] Performing post install cleanup...\n\n"
# Clean out docs
rm -rf /usr/share/{doc,doc-base,man,locale,zoneinfo}
# Clean out package management dirs
rm -rf /var/lib/{cache,log}
# clean additional files created outside the source tree
rm -rf /root/{.cache,.config,.local}
rm -rf /tmp/*
# remove os dependencies
apt-get -y autoremove
rm -rf /var/lib/apt/lists/*