Fix jenkinsfile

Jenkinsfile

@@ -7,6 +7,8 @@ pipeline {
                 script {
                     // Check for spaces or mixed indentation
                     sh '''
+                    grep -P "test" <<< "test" || echo "grep -P not supported"
+					
                     # Define file extensions to check
                     FILE_EXTENSIONS="css,json,js,java,htm,html,cpp,c,h,p,py,go,cs"