Specifically set uid/gid for jupyter to 1001.
Specifically set uid/gid for jupyter to 1001.

This is supposed to match those of the unidata/jupyter-singleuser image.
Would be nice if Docker gave us a better way.

julienchastang/unidata-python-workshop,julienchastang/unidata-python-workshop,Unidata/unidata-python-workshop