Base images like alpine/debian/ubuntu get used by a lot of third party containers too so if you have multiple containers running on the same device they may in practice be very small until the base image gets an upgrade.
I think this something that people miss a lot when trying to optimize their Docker builds. Is the whole optimizing for most of your builds vs optimizing for a specific build. Not easy.
> Each layer in your image might have a leaner version that is sufficient for your needs.
when reusing a huge layer is cheaper than choosing a small layer that is not reused.