We need ipykernel>=4.6 that fixes bug when the parent has PID1 as in binder

nthiery · nthiery · commit 43c6f9cdaf00 · 2017-10-17T14:49:18.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -13,4 +13,4 @@ RUN chown -R ${NB_USER}:${NB_USER} ${HOME}
 USER ${NB_USER}
 
 # Upgrade to jupyter 5.* as required by mybinder
-RUN sage -pip install "notebook>=5"
+RUN sage -pip install "notebook>=5" "ipykernel>=4.6"
