Well, if you\'re looking for something small, then I think Mariux\'s Mule can handle it.
I have a (not-yet-released) 131m long frigate that has good weaponary and fair shields specialized for transport. So far I\'ve gotten a version which carries 10 tactical insertion drop-pods (may have to re-design the pods slightly), but I plan to modify it for container transport. It also, when the plex-door extensions are activated, capable of stable planetary landing, assuming you land in a considerably flat world. If that\'s too big, then we\'ll try to think of something else.