Docker image synchronization tool for Docker Registry V2 based services
remove records file mechanism, image-syncer no longer need persistent storage.
support "registry(a domain)/repository" format without a namespace fix problem of "return zero code if client failed to initialize" print actual image url in log
fix typo "registry/namespace" format of auth information description support go mod support
fix bug of getting tags failed from a http registry
add http support
fix url parsing bug of ip:port format registry url
first release