refactor: split a run and main function so defers Execute #1658
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What this PR does / why we need it: So the
defer cancel()
runs. Go won't run defers ifos.Exit()
is called, so in the case of an error the context cancelation will not run. See https://go.dev/play/p/0AIokfnVk0m for an example. Probably not a big deal, but something I noticed poking around the source code while exploring oras and thought I would send this small PR.Please check the following list: