fix: makefile container-diff on darwin

[tal66]

hi, this closes #2821:
make install-container-diff on darwin and linux.

Edit: i now see it was already suggested in 2145, why was it closed?

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[JeromeJu]

cc @aaron-prindle might have the best context, can we check the reason for closing #2145?

[aaron-prindle]

LGTM, thanks for the PR @tal66! #2145 was closed due to being inactive for some time (> 1 year)