chore(container): migrate from python:3.12 to Red Hat UBI9 Python image

[ruivieira]

Problem

The current Containerfile uses the generic python:3.12 base image:

FROM python:3.12

For enterprise and production deployments, it's recommended to use Red Hat Universal Base Images (UBI) which provide:

• Security-focused base images with minimal attack surface
• Regular security updates and vulnerability scanning
• Enterprise support and compliance requirements
• Better alignment with Red Hat OpenShift and RHEL ecosystems

Proposed Solution

Replace the current base image with the Red Hat UBI9 Python 3.12 image:

FROM registry.access.redhat.com/ubi9/python-312

Changes Required

Update Containerfile line 2:

• Current: FROM python:3.12
• Proposed: FROM registry.access.redhat.com/ubi9/python-312