diff --git a/venv/Dockerfile b/venv/Dockerfile
index c910ae95ec1d1de811b045212b2731765b72982d..69ee81dd37afaf07db8dd0dd5f4dad9acd4fdc8b 100644
--- a/venv/Dockerfile
+++ b/venv/Dockerfile
@@ -2,4 +2,5 @@ FROM jupyter/base-notebook:hub-2.1.1
 USER root
 ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get install --no-install-recommends -y curl wget
+RUN curl --help
 USER jovyan