Last v1 Release

The last snapshot of this PyHC Docker environment pipeline that used the old "v1" spreadsheet-derived workflow. It used Python 3.12, hence the tag number. It is superseded by the new "v2" lockfile-driven approach detailed in this PR.

Last Python 3.11 Snapshot

Last formal release of this PyHC Docker environment pipeline repository that uses Python 3.11 for the environment.

First formal release

First formal release of this PyHC Docker environment pipeline repository.