I've seen containers spaced apart, parallel to each other,
Usually about 25 to 30 feet apart,
And a set of trusses and roof used between them to make a covered, but open work area on job sites before.
A local guy works on tractors, and he has that arrangment for his outdoor work, and the containers make for very secure storage.
In the winter, a third was often place across one of the open ends, or a back wall was constructed to keep the weather out.
Some containers can be had with side doors already in them so you shouldn't need to cut into them.
'Four Square' container arrangment would give you an approximate 50'x50' 'courtyard' for garden or what ever.
That would also allow all doors to swing freely if you needed to get large objects into any one of them.