FEAT: Make Container registries override-able at ENV level.

[prakarsh-dt]

Summary

Give a way to push images to different Container registry within the same app so that images build for non-prod envs can be pushed to non-prod registry while images built for production can be pushed to prod registry.

Motivation

Some organizations may have different Cloud provider accounts for different env (like separate AWS accounts for Prod and non-prod resources) or they might want to push images to separate container registries for different clients.

Proposal

Give a way to push images to different Container registry within the same app so that images build for non-prod envs can be pushed to non-prod registry while images built for production can be pushed to prod registry.