Fleshed out Documentation
alpine.conf
* improve motd readability
* default access = public
* default regions = all
* remove version 3.11 (EOL)
alpine-testing.conf
* access is private
* limit aws regions
build
* improve/refine overlay installation
* rename "actions" step to "state"
image_configs.py
* target step "state" updates images.yaml as if "publish" WOULD be done (but won't be)
