container/encapsulate: Support copying commit metadata keys #234
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For coreos/coreos-assembler#2685
we want to copy e.g.
rpmostree.input-hash
into the container image.Extend the
ExportOpts
struct to support this, and also exposeit via the CLI, e.g.
ostree container encapsulate --copymeta=rpmostree.input-hash ...
.And while I was thinking about this...we should by default copy
some core ostree keys, such as
ostree.bootable
andostree.linux
since they are key pieces of metadata.