I would say you’re on the right track there, with your entity being named input:100. As you can see from my explorer screenshot, mine show as temperature:100 through temperature:103
And as per step 6 in this post Shelly Plus 1PM with Add-on and DS18B20 temperature sensor help - Configuration - Home Assistant Community (home-assistant.io), that is how I have my YAML configured for those Addon inputs. You probably need a garage door device_class, or something like that. Instead of my value_json.tC which extracts celsius temperature, it looks like your attribute is called state, so you’d need value_json.state I’d imagine.
I hope others here can add/confirm for you.