Hi! Thanks for using Jupyter's docker-stacks images.
If you are requesting a library upgrade or addition in one of the existing images, please state the desired library name and version here and disregard the remaining sections.
If you are reporting an issue with one of the existing images, please answer the questions below to help us troubleshoot the problem. Please be as thorough as possible.
**What docker image you are using?**
Example: `jupyter/scipy-notebook`
**What complete docker command do you run to launch the container (omitting sensitive values)?**
Example: `docker run -it --rm -p 8889:8888 jupyter/all-spark-notebook:latest`
**What steps do you take once the container is running to reproduce the issue?**
Example:
1. Visit http://localhost:8889
2. Start an R noteobok
3. ...
**What do you expect to happen?**
Example: ggplot output appears in my notebook.
**What actually happens?**
No output is visible in the notebook and the notebook server log contains messages about ...
