feat: Add Dockerfile.ppc64le (#424)

[ruivieira]

(cherry picked from commit 919f1c5)

Summary by Sourcery

Add a new Dockerfile.ppc64le to enable Docker image builds on the ppc64le architecture

New Features:

• Add Dockerfile.ppc64le to support building Docker images on the ppc64le architecture

Build:

• Introduce a dedicated Dockerfile for ppc64le-based builds

[sourcery-ai]

Reviewer's Guide

Introduce a new Dockerfile for the ppc64le architecture, mirroring the existing build process but targeting ppc64le base images to enable multi-architecture container builds.

File-Level Changes

Change	Details	Files
Add ppc64le-specific Dockerfile	Create Dockerfile.ppc64le Use ppc64le variants of base images Replicate existing build and configuration steps for consistency with standard Dockerfile	Dockerfile.ppc64le

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[sourcery-ai]

Hey @ruivieira - I've reviewed your changes and they look great!

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