I am unable to run the dsbulk. I installed Java runtime but when I run dsbulk it fails with the following error: Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory a ...

I'm not sure where you got the gitblit-1.8.0.jar file, but that jar is just part of a whole distribution package, like GitblitGO, to be used together. Information about the Gitblit GO package is here ...