refactor src/ to be just a basic build
add examples
write up help.md and usage subcommand
add test folder for dev testing
improve install script
many numerous improved to build script,
moved portions of build script to functions in helpers.lib
support try using build environment file
refactor Dockerfile to use heredoc and RUN --mount instead of COPY
refactor Dockerfile init RUN to copy /bin and env directories from source always
user build.env and run.env for additional build and run environment
bake run.env into image
David Kebler