message: notebooks Docker user=jovyan
diff: # note that this Dockerfile is meant for notebooks and you can install this package directly
  FROM ubuntu:19.10
  # https://github.com/binder-examples/minimal-dockerfile
  -ARG NB_USER=defaultruser
  +ARG NB_USER=jovyan
  ARG NB_UID=1000
  ENV USER ${NB_USER}
  ENV NB_UID ${NB_UID}
  