To have reproducible prototypes, I use Make to wrap the whole workflow in docker. Then I push the code to gist and forget about it. Although GitHub gist doesn't allow binary file, images embedded in .ipynb (JSON), on the other hand works in gist. Here is an example.

https://gist.github.com/ontouchstart/854a3c280b81f530d3ae9cb...

The notebook generated by nbconvert (see the instruction in the Makefile) is too big to display in GitHub gist Web UI but works fine in nbviewer.

https://nbviewer.jupyter.org/gist/ontouchstart/854a3c280b81f...