Cleanup output directory

Author: GR360RY

rocky8/rocky8.pkr.hcl

@@ -90,10 +90,11 @@ build {
 
   post-processor "shell-local" {
     inline = [
-      "SOURCE=rocky8",
+      "SOURCE=${source.name}",
       "OUTPUT=${var.filename}",
       "source ../scripts/fuse-nbd",
-      "source ../scripts/fuse-tar-root"
+      "source ../scripts/fuse-tar-root",
+      "rm -rf output-${source.name}",
     ]
     inline_shebang = "/bin/bash -e"
   }