title: Build Grails project (2.5) with jenkins
body: <p>I try to build my grails project with jenkins, i'm newbie on jenkins. 
  first step i get my project from bitbucket, 
  after i used the grail plugin to build but i have this error : </p>
  
  <p>What's wrong with my configuration, it's not a jenkins user right issue as i could see in several tickets</p>
  
  <pre><code>[mycj] $ /var/jenkins_home/workspace/mycj/grailsw -Dgrails.work.dir=mycj cl
  
  ean --non-interactive --plain-output
  FATAL: command execution failed
  java.io.IOException: Cannot run program "/var/jenkins_home/workspace/mycj/grailsw" (in directory "/var/jenkins_home/workspace/mycj"): error=13, Permission denied
      at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
      at hudson.Proc$LocalProc.&lt;init&gt;(Proc.java:245)
      at hudson.Proc$LocalProc.&lt;init&gt;(Proc.java:214)
      at hudson.Launcher$LocalLauncher.launch(Launcher.java:846)
      at hudson.Launcher$ProcStarter.start(Launcher.java:384)
      at hudson.Launcher$ProcStarter.join(Launcher.java:395)
      at com.g2one.hudson.grails.GrailsBuilder.perform(GrailsBuilder.java:266)
      at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
      at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
      at hudson.model.Build$BuildExecution.build(Build.java:205)
      at hudson.model.Build$BuildExecution.doRun(Build.java:162)
      at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:534)
      at hudson.model.Run.execute(Run.java:1728)
      at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
      at hudson.model.ResourceController.execute(ResourceController.java:98)
      at hudson.model.Executor.run(Executor.java:404)
  Caused by: java.io.IOException: error=13, Permission denied
      at java.lang.UNIXProcess.forkAndExec(Native Method)
      at java.lang.UNIXProcess.&lt;init&gt;(UNIXProcess.java:247)
      at java.lang.ProcessImpl.start(ProcessImpl.java:134)
      at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
      ... 15 more
  Build step 'Build With Grails' marked build as failure
  Finished: FAILURE
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/qlnaN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qlnaN.png" alt="enter image description here"></a></p>