Merge pull request #2337 from RichardScothern/registry-v2.6.0-rc.1

registry v2.6.0-rc.1

library/registry

@@ -6,5 +6,6 @@
 2: git://github.com/docker/distribution-library-image@3b4a84c1f152b60688e99d2efadf305479541482
 2.5: git://github.com/docker/distribution-library-image@3b4a84c1f152b60688e99d2efadf305479541482
 2.5.1: git://github.com/docker/distribution-library-image@3b4a84c1f152b60688e99d2efadf305479541482
+2.6.0-rc.1: git://github.com/docker/distribution-library-image@badae459fc79845d0ca889e9002261a35738de87
 latest: git://github.com/docker/distribution-library-image@3b4a84c1f152b60688e99d2efadf305479541482