mz444: move dir

[mzihlmann]

Fixes #444

Description

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• Includes unit tests
• Adds integration tests if needed.

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• The code flow looks good.
• Unit tests and or integration tests added.

Release Notes

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Examples of user facing changes:
- kaniko adds a new flag `--registry-repo` to override registry

[mzihlmann]

ah move doesn't work correctly here as our Copy implementation always skips copy to /kaniko subfolders. We need add a more barebones version for it.