It is not possible yet, and I’m not sure it will be. This component is not an offical one from sonoff or ewelink, and I’m not sure the developper will be able to access to the device features and hardware since it is running through docker on the device ITSELF.
You are right that this will be a significant difficulty. Especially since HA running in a docker environment does not have all the capabilities of HAOS. For now, the eWeLink developers have (intentionally or unintentionally) made it so that you can add iHost as a Matter bridge to the eWeLink app via NSPanel Pro. This doesn’t have much practical use but for Matter enthusiasts it is some option. BTW, through this you don’t see devices in HA on docker.