Also node-14 will be changed from 14.15.4 to 14.16.0 as intended,
while node-12 will not be changed staying with 12.4.0.
Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>
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
