fix(Makefile): use goos for installing container-diff

[hown3d]

Signed-off-by: Höhl, Lukas [email protected]

Description

When installing container-diff via the makefile target "install-container-diff", it always installed the linux version. In case of running on darwin, this will result in an exec format error.

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• [x] Includes unit tests
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Reviewer Notes

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