Using a 20′ container, you can divide it in half internally, have access doors to both rooms, one is an office and fully lined with power and the other is for storage with access through the container doors as well.
Relocatable Office and Store Room
Using a 20′ container, you can divide it in half internally, have access doors to both rooms, one is an office and fully lined with power and the other is for storage with access through the container doors as well.
Access Containers - Thinking Outside The Box 