Add options to jupyterlab docker CMD

[jlubken]

Jupyterlab terminal is tini. Override using a dockerfile CMD options for /bin/bash.

See the ServerApp options

Figure out why the CMD breaks. Likely a quoting/array issue with the dockerfile CMD.

1. Invoke bash instead of tini shell when using embedded jupyterlab terminal application:

--ServerApp.terminado_settings="shell_command=/bin/bash"

2. Blank security token without having to write a config file:

--ServerApp.token=""

Use docker compose up --build jupyterlab and see if the edits work.