This is a set of sci-fi containers being used for another project.
In-game lore:
These containers were initially introduced by Lynnstrum Research, a government-funded science and military research corporation, in 2054. They were designed to be a one-size-fits-all solution for rapid deployment and multi-use purposes.
The containers are used primarily for military, medical, and scientific purposes (each denoted by a color on either side of the container). Each container has two batteries which power lights, internal environmental conditioning systems, and general security features. At full operation, each container has a battery life of 2.5 years.