pip container: Build from Poetry and install wheel (#498)

For some reasons, pip/setuptools was installing g1_monetary_license directory alongside Silkaj sources It does not seems to be the case anymore, I can’t find this information in setuptools changelog

In pyproject.toml, [tool.poetry.include] field is for Poetry usage There is a way with setuptools I did not manage to make it work https://setuptools.pypa.io/en/latest/userguide/datafiles.html

Instead, build wheel from Poetry, copy it and install it to Py image