diff --git a/Jenkinsfile b/Jenkinsfile
index 565b302..a3e4760 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -102,7 +102,8 @@ spec:
           sh '''
             set -euo pipefail
 
-            SRC_DIR=$(find harbor-src -maxdepth 1 -type d -name "harbor-*" | head -n1)
+            # `harbor-src/` itself matches `harbor-*`, so exclude it.
+            SRC_DIR=$(find harbor-src -mindepth 1 -maxdepth 1 -type d -name "harbor-*" | head -n1)
             cd "${SRC_DIR}"
 
             export VERSIONTAG="${VERSIONTAG}"
@@ -139,7 +140,7 @@ spec:
   }
   post {
     always {
-      cleanWs()
+      deleteDir()
     }
   }
 }