That walkway looks good mate, the container is missing something I think though, it's too straight I feel. The shipping containers we have here (I assume they are same as for you) need to have curved edges on the "ribs", I'm not sure of that's possible for laser cutting or not though.
I know what you mean, and as far as I know, it's nit possible to laser cut them that way. It doesn't help that this initiate design doesn't line up flush very nicely. V2 of the basic container should be much more flush and boxy. I'm starting work on some more sci fi ones too.