Well, considering the MTC doesn't have landing capacity either, it won't matter. Either use tractor beams (if available) or enter the cockpit of the cargo container and choose dock from the travel option. Now I've not tried the second, but unless they made an exception it should be possible to do it that way.
Its not possible and I still say its stupid its not possible. They should have landing capacity, or just make anything dockable. I don't see why you need landing gear to dock. TIE fighters didn't have it and are able to dock in anything.
It also means you can't transfer them between ships like other ships or vehicles, you have to unload and Tractor in.
Only way you can do it is with tractor beams, which they gave to MTCs, so at least something.