update: jenkinsfile code for multibranch pipeline

Jenkinsfile

@@ -80,8 +80,14 @@ pipeline {
                 dir("${MANIFEST_DIR}-${overlayEnv}") {
                   sh """
                     set -e
-                    echo "Cleaning up overlays folder to only keep ${overlayEnv}"
-                    find overlays -mindepth 1 -maxdepth 1 -type d ! -name "${overlayEnv}" -exec rm -rf {} +
+                    echo "🧹 Cleaning overlays folder, keeping only ${overlayEnv}..."
+                      for d in overlays/*; do
+                        [ -d "$d" ] || continue
+                        if [ "$(basename "$d")" != "${overlayEnv}" ]; then
+                          echo "Removing $d"
+                          rm -rf "$d"
+                        fi
+                      done
 
                     echo "Updating image tags for ${overlayEnv}..."
                     yq e -i '(.spec.template.spec.containers[] | select(.name == "backend") | .image) = "${REGISTRY}/${APP_NAME}-be:${overlayEnv}-${env.IMAGE_TAG_FINAL}"' overlays/${overlayEnv}/patch-deployment.yaml