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Expose clobber refusal error #2146

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Expose clobber refusal error #2146

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6 changes: 5 additions & 1 deletion pkg/crane/copy.go
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,10 @@ import (
"golang.org/x/sync/errgroup"
)

// ErrRefusingToClobberExistingTag is returned when NoClobber is true and the
// tag already exists in the target registry/repo.
var ErrRefusingToClobberExistingTag = errors.New("refusing to clobber existing tag")

// Copy copies a remote image or index from src to dst.
func Copy(src, dst string, opt ...Option) error {
o := makeOptions(opt...)
Expand Down Expand Up @@ -58,7 +62,7 @@ func Copy(src, dst string, opt ...Option) error {
}

if head != nil {
return fmt.Errorf("refusing to clobber existing tag %s@%s", tag, head.Digest)
return fmt.Errorf("%w %s@%s", ErrRefusingToClobberExistingTag, tag, head.Digest)
}
}
}
Expand Down