diff --git a/Dockerfile b/Dockerfile
index 0397777..9ba8d76 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -33,4 +33,5 @@ USER app
 ENTRYPOINT []
 WORKDIR /code-read-write
 CMD cp -R /code/* . && \
-  /usr/src/app/dest/bin/sonarlint
+  /usr/src/app/dest/bin/sonarlint \
+  --src '**/*.{js,py,php,java}'