Hi @panos ,
thanks so much for the update and it is working perfectly.
I am not struggling with two items:
a) implementing a custom map
b) implementing the support for Teltonika legacy devices (i.e. TCP connection).
Focussing on a) at the moment: I have followed the steps as in Developer Guide: Working on maps · openremote/openremote Wiki · GitHub and the instructions in the video but I am struggling with the fact that I still get the Rotterdam map at the end.
I have followed also the issue in Easy way to change map to another city? - #2 by Denis but I have the impression that the structure is slightly different as I get get a duplicate mount point when I add the folder as follows:
manager:
image: pankalog/fleet-management:${MANAGER_VERSION:-latest}
restart: always
depends_on:
keycloak:
condition: service_healthy
volumes:
- manager-data:/storage
- deployment-data:/deployment
- ./deployment:/deployment
Last question: shall I modify this variables as follows?
OR_MAP_TILES_PATH: …/deployment/map/mapdata.mbtiles
OR_MAP_SETTINGS_PATH: …/deployment/map/mapsettings.json
OR_MAP_TILES_PATH: ‘/efs/europe.mbtiles’
Just an additional hint for you: on Quickstart · openremote/fleet-management Wiki · GitHub there is probably a typo error as the instruction is: sudo docker cp -L fleet-management-proxy-1:/deployment/letsencrypt/live/{your FQDN}/fullchain.pem {path to your directory}/fullchain.pem
While the image is actually fleet-management_proxy_1
Just for the sake of being picky 
Cheers,
Antonio