Guess it wasn't a bug, latest is most recent if produced via git.

1) It appears that manually building images creates master as latest.
2) If built from git commit, latest is the latest.

README.md

@@ -20,7 +20,7 @@ Publish the container's port to the host:
 
 
 ```
-docker run -d -p 81:80 --name="ybdb" bikebike/ybdb:master
+docker run -d -p 81:80 --name="ybdb" bikebike/ybdb
 ```
 
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