How do I add additional_trust_anchors to nw.js export?

Hi,

I am using Construct 3 to make a control panel for an IoT device. I want to use web sockets to communicate.

I want to supply self signed certificates for the device so that the web socket communication is secure.

I am able to get this to work in an HTML5 export by adding a certificate to my keyring (on macos).

For nw js there appears to be a setting -- additional_trust_anchors -- that goes in the manifest.

Is it possible to pass the certificate to construct as part of the nw.js build process?

Thanks