[crdoconnor]

Exactly what rad_gruchalski said.

I'm assuming that in this case the base container would be a 'ruby' container or something. You'd build an example container atop it running a bit of example ruby code - verifying that it behaves properly. Those behavioral tests could be used to verify that the underlying container is configured properly.

I suppose that's sort of what you're doing in the example you linked to above.