Here is a great example of the type of high quality portable workshop that can be built into a standard 20ft shipping container. When we modified this container we added:
This is a three story combat training complex made from a variety of Shipping Containers. In this post you can see the fabrication of internal stair case to gain access to the top shipping Container internally. The first photo’s is from our office watching over the build.
This is a container that we modified to have a 5.4mtr Roller door, Awning and Painted in Black. This one is a photo with the awning open that covers the full width.