I think this looks great. However I do have two issues with it (what a surprise, right?).
It is not at all to scale, have you seen how big tall decks are in discovery? I mean container must be for giants that are as tall as 2 story buildings, at least.
My second issue is an RP one. It Is very doubtful trains are made to provide life support to all their containers. Perhaps they can do this while docked with the assistance of the stations resources but I very much doubt it is done in space. If you want the pods to be realistic I would devote at least a quarter of each one to life support systems, to represent this I would just make a section with no windows.