proxybroker2 Build mechanism

brought several improvements:

the ability to use dev containers on Windows VS Code
using a multi-stage build to reduce the size of the final image
more secure installation of poetry, as recommended by the developers
no pip usage
venv transport between images for painless and easy app installation in both debian-slim and alpine
custom build scripts revised and moved to makefile instructions
added commands to calculate image size
revised and moved commands for multiarch build. With context cleanup after completion.
added instructions for smoke testing the built image
significant details are reflected in the readme
following the OCI Image Format Specification

Dec 21 '22 12:12 mcgr0g

hi @mcgr0g thanks for the big patch. I might need some time to review it. lol

@hms5232 @ziloka @afunTW @vincentinttsh would you like to take a look?

Dec 30 '22 17:12 bluet

I notice the develop environment setting set Poetry version 1.3.1, but project pipeline current is 1.1.4. I had made a PR to bump Poetry version in action test (see #115 ).

Dec 31 '22 07:12 hms5232

Personally, I prefer to keep the repo natural which means any setting for a specific IDE should be set in .gitignore. Let the developer focus on features and bugfix.

Or, from another viewpoint, aligning the development setting can boost the community's efficiency.

So far, seems the community go on the second option. As long as the testing passed, I am ok with that.