All shipping containers are identical width and most have two standard height and length measurements and as such they provide flip elements that can be combined into larger set ups. This simplifies design, planning and transport. As they are already designed to interlock for ease of mobility during transportation, strength construction is done by simply emplacing them. Because of the containers' modular design additional construction is as easy as stacking more storage containers. They could be stacked up to 12 units high when empty.
The size and weight of the pots will, typically, require them to be put by a crane or forklift. Traditional brick, block and lumber construction materials is often moved by hand, even to upper stories.