Update cleanup command

Author: nikoshell

Makefile

@@ -58,7 +58,10 @@ preview:
 	@echo "\n\n**** Preview complete.\n\n"
 	@echo "Open the preview site at: $(PREVIEW_SITE_URL)\n\n"
 	@echo "\n**** Cleaning up old releases (keep latest 3, skip 'current')...\n"
-	$(REMOTE_CMD) bash -c "'cd $(RELEASES_DIR) && ls -1dt */ | grep -v \"^current/?$$\" | grep -v \"^$(TIMESTAMP)/$$\" | xargs -r echo rm -rf'" | tee /dev/stdout
+	$(REMOTE_CMD) 'bash -c "cd $(RELEASES_DIR) && \
+	for dir in $(ls -1dt */ | sed \"s:/*$$::\" | grep -v ^current$$ | grep -v ^$(TIMESTAMP)$$ | tail -n +2); do \
+		echo rm -rf \"$$dir\"; \
+	done"' | tee /dev/stdout
 
 
 ifeq ($(FORCE_DEPLOY), true)