Make the main module version detectable by SBOM scanners

[LaurentGoderre]

[afr1ka]

Hello LaurentGoderre,

Could you please provide more details about this update? What is the purpose of adding main.version var in the Dockerfile and not add to the code? What SBOM tool are you using?

[LaurentGoderre]

@afr1ka this will make the version explicitly discoverable by Syft and Docker Scout by mapping the version to the namespace.