I have finished to install docker on raspberry with this procedure:
https://docs.docker.com/engine/install/debian/
as I am on a 64bits architecture. Then launch docker compose with the provided configuration from thingboard (Dashboards -> ThingsBoard IoT Gateways -> My Gateway -> Launch Command)
If someone have some trouble, I think I missconfigure some credential/security stuff, as we can see from docker image commands:
It work properly that way but I still don't know what was missing.