Currently skopeo accepts three distinct flags for overriding the default (host) platform selection: --override-os, --override-arch, and --override-variant.

When working with other tools such as buildkit, the platform is instead specified as a single slash-delimited string, such as linux/arm64 or linux/arm/v7. This format is explained in further detail here.

It would be nice if skopeo accepted a new flag such as --override-platform that accepted such a platform specifier. And probably the three existing override flags should be deprecated.