[CI] Add container build

[Renizmy]

Create a Connector Base Image (WIP🚧)

• Should follow the same lifecycle as the Python library.
• ARM support has been implemented.

Required environment variables for docker registry connection

• DOCKERHUB_PASS
• DOCKERHUB_USERNAME

Completed Tasks

• Python 3.12 build
• Python 3.11 build
• ARM image support
• Use a dedicated app user instead of the default image user

Pending Tasks

• Sign images
• Add solution to manually trigger nightly builds => Aborted
• Implement vulnerability scanner (with cache optimization)

[helene-nguyen]

@Renizmy Thanks a lot for your contribution !

I have added some questions and changes to do.

And to move forward, we also need to create an image with rolling tag, could you add these changes too on the file ?

[Renizmy]

Hello
I made few modifications:

Add capacity to push to ghcr.io registry (images will be pulled very heavily during connector releases)
Facilitate the add-on of Python versions