DbSchema already include the Apache Ignite drivers.
The docker container is described at https://apacheignite.readme.io/docs/docker-deployment.
Create the container using:
docker run --name ignite -p 47500:47500 -p 47501:47501 -p 10800:10800 -it apacheignite/ignite
In DbSchema you will have to simply enter the host value and you are connected.