Store keybinding overides in Codespace image

I’m trying to add a couple of key-bindings to my codespace image. But I can’t find where to store the keybindings.json, when I open the file in an active codespace it’s located in /User/keybindings.json, but I can’t find it in bash or when I try to Open Folder that folder.

Is there a way to add these to the devcontainer.json? Or a magic place I can send them to from my Docker File?