diff --git a/appendix b/appendix
index 10a7319..a6a6a0d 100644
--- a/appendix
+++ b/appendix
@@ -9,7 +9,8 @@ RUN yes | unminimize
 ENV MANPATH="${NB_PYTHON_PREFIX}/share/man:${MANPATH}"
 RUN mandb
 
-RUN chmod +x /rocker.sh && /rocker.sh
+COPY rocker.sh /rocker.sh
+RUN chmod +x /rocker.sh && /rocker.sh && rm /rocker.sh
 
 # Revert to default user
 USER ${NB_USER}