Appendlayer

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- Add support for stored Docker credentials with "https"-based URL
instead of hostname as the authentication entry.

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- Add support for username/password credentials in stored Docker
credentials in addition to identity token.

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- Add support for extracting refresh token from stored Docker
credentials.

- Fix bug where two different repositories would not correctly get
authorized for the destination registry.

- Added support for specifying different source and destination
repositories. Missing blobs will be copied if necessary.

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- Initial release.