Try to invoke build.cmd now that nant.exe is in the path
diff --git a/Jenkinsfile b/Jenkinsfile
index 50b5927..c4ee1ec 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -32,7 +32,7 @@
 		{
 			withEnv(["Path+NANT=$NANT_LATEST"])
 			{
-                		bat "NAnt.exe -version"
+                		bat "build.cmd"
                 	}
 		}
 	}