Hacking regander and reghigh

TL;DR

Hack in the source folder.

# Building the binaries
make build

# Syntax
make lint

# Tests
make test

Use dckr.

On mac, brew install dubo-dubon-duponey/brews/dckr

Then just run any of the make commands with dckr.

Specifically:

DOCKERFILE=./sh-art/Dockerfile
for TARGET in ubuntu-lts-current ubuntu-next debian-current debian-next; do
  dckr make test
done

bash correctness (but not POSIX-ness)
light on dependency (shasum, and the base dc library)
standalone script
modular, simple to hack-on source code
DRY, KISS implementation of the registry REST API
additional, more advanced scenarios, should be composed on top of regander (see reghigh as a good example), not added as core features