Every package manager should clean up after themselves in order to keep
docker layers neat and tiny:
apt (Debian/Ubuntu package manager):
- unneeded dependencies are cleared (autoremove)
- caches are cleaned (clean)
- package lists are deleted
yum (CentOS package manager),
zypper (OpenSuse package manager)
- should clear caches after installing dependencies
pip (Python package manager),
apk (Alpine package manager)
- should use no cache for installing dependencies
