If your mod uses the vanilla uiConfigs then that's all you need to add.
Otherwise you'll need to look at one of the chest patches and copy that for your interface.

I use

"uiConfig" : "/interface/chests/chest<slots>.config",

because I basically copied and adapted the hylotl shippingcontainer
Full object at pastebin.com/dbDAw1y2

Are you reading the log while modding.
Mod load order is most likely your issue.

Please visit the modding forums if you need help.

My log state that your mod is effectively loaded before mine, as I added

"requires" : ["Improved Containers"],

in my _metadata file to be sure.
The Search function work, as well as the Sort, but the Rename is greyed out, the Stack work as intended, and the stuff pop out of the container when I picked it up.
I though I would just have to add your 2 line from the .patch file, but it seems it would take more to make it work.

It's scripts, not script

Well, I do feel stupid now... Thanks :D

could you make a patch for enhanced storage?

Sayter wrote that this mod breaks Terramart Shipments in Frackin' Universe. Could you come up with a patch, please? :)

Hey v6, can we add support for this mod? https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=738418305

I published it long ago and I just remembered it doesn't have IC support. I tried including the scripts as suggested, but then when you break the item it drops the original container and the "improved container", effectively duplicating the item...
Any ideas?

Can you update mod for FU ?

I found a small bug with the generic ship lockers added by https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=730388011 this mod. When breaking one that has items in it, it drops a second, empty locker as well as the one still holding the items.