mvn install fails if it has already been run
After the recent changes if you run 'mvn install' twice in a row the shamrock-maven-plugin will fail with Caused by: java.nio.file.FileAlreadyExistsException: META-INF/MANIFEST.MF
diff --git a/core/creator/src/main/java/org/jboss/shamrock/creator/phase/runnerjar/RunnerJarPhase.java b/core/creator/src/main/java/org/jboss/shamrock/creator/phase/runnerjar/RunnerJarPhase.java
index 16a2bcb83c7..1715f696024 100644
--- a/core/creator/src/main/java/org/jboss/shamrock/creator/phase/runnerjar/RunnerJarPhase.java
+++ b/core/creator/src/main/java/org/jboss/shamrock/creator/phase/runnerjar/RunnerJarPhase.java
@@ -171,7 +171,7 @@ public void provideOutcome(AppCreator ctx) throws AppCreatorException {
         }
 
         runnerJar = outputDir.resolve(finalName + "-runner.jar");
-
+        IoUtils.recursiveDelete(runnerJar);
         try (FileSystem zipFs = ZipUtils.newZip(runnerJar)) {
             buildRunner(zipFs, appState, ctx.resolveOutcome(AugmentOutcome.class));
         } catch (Exception e) {
['core/creator/src/main/java/org/jboss/shamrock/creator/phase/runnerjar/RunnerJarPhase.java']