Geofencing with IFTTT


I have OH2 running on a Raspberry Pi, with MQTT. I have a garden light, which is working fine.

I would like to do some geofencing and add some rules. For example: If someone is coming home, and it is after sunset, turn on the garden light for 5 minutes.

How can I do this? I have Openhab cloud working. I think IFTTT would be the best solution but I dont know where to start.

Thank you!