Craft better documentation for tutorials that use a Docker installation

[pombredanne]

Today all the tutorials (and in particular the "create pipeline from the command line" tutorials such as https://scancodeio.readthedocs.io/en/latest/tutorial_cli_analyze_docker_image.html) are assuming a virtualenv and development style checkout and installation.

They do not work well with a Docker -based deployment that we otherwise recommend. The only place that provides some input on command line project creation with a Docker deployment is in https://scancodeio.readthedocs.io/en/latest/command-line-interface.html?highlight=volume#command-line-interface

I would like to have a simple step by step tutorial for creating a scan project from the command line using a Docker deployment.