[tmp] updating dockerfile

[djarecka]

• using neurodocker 0.7.0

• using python 3.7 instead of 3.6

• adding niflow-nipype1-workflows

• adding some shorter notebooks for testing

[djarecka]

@effigies @satra - do you know why this is failing? https://circleci.com/gh/djarecka/nipype_tutorial/539

I'm able to build the image on my laptop...

[satra]

@djarecka - don't know - could you rerun job with ssh?