(IFTTT) Forwarding messages to devices on the local network

Please excuse me if this is a bit of a ramble, i'm not sure what I'm actually looking for here...

Recently, I've started creating IoT devices that sit on the local network. I can control these with google home via IFTTT and webhooks.

The IFTTT service creates a webhook. I'm using unique ports for each device, e.g.

for IoT device 1: mywebhooks.duckdns.org:1001/command/

for IoT device 2: mywebhooks.duckdns.org:1002/command/

Then on my router, forward the port to the device. So each IoT device uses a different port, e.g:

WAN port 1001 ->> local IoT device 1:  192.168.1.101

WAN port 1002 ->> local IoT device 2:  192.168.1.102

etc

However, this seems like it could be simplified if there was a docker that could route data to the correct local IP address directly, so:

for IoT device 1: IFTTT sends webhook:  mywebhooks.duckdns.org:dockerport/DEVICE_1/command/

for IoT device 1: IFTTT sends webhook:  mywebhooks.duckdns.org:dockerport/DEVICE_2/command/

then the docker works out that "DEVICE_1" is 192.168.1.101 and forwards the data to the IoT device, and viceversa with the response.

Is there such a docker app? What do you use to do this? How do you do it?

Hope that makes sense :-/