Comment by zbentley

> which was selling people only for people that either don't understand docker layers or can't make Dockerfile correctly.

...or people who had a test/deploy/debug cycle on environments that necessarily had no layer cache (ephemeral VMs, one-shot kubernetes clusters, OpenWRT routers that lost the layer cache on reboot). Or people with network-constrained traffic from registries or mirrors thereof.

Or people in environments that took container security findings (perhaps too) seriously and were tired of triaging endless reports for random dependencies in "FROM ubuntu" containers, and wanted a default required-by-policy base image that didn't come with the world.

Or people who needed a relatively full-featured build environment against musl without having to do bizarre incantations in e.g. a Fedora image to switch away from libc while still being able to link against other system libraries.