Node-RED on Azure IoT Edge on Raspberry Pi accessing GPIO

Anyone have any luck running https://flows.nodered.org/node/node-red-node-pi-gpiod to interact with a PI's GPIO from within an Azure IoT Edge Module?

I've got pigpiod running, but the module (container) running Node-RED can't see localhost:8888. I've tried using 172.18.0.1 (since the Module's container's IP is 172.18.0.3 so I thought that might get me the host), but no joy.