Regarding GCP, the process for deploying the server is creating a new instance with our ready-made image (see https://allegro.ai/docs/deploying_trains/trains_server_gcp/ ) - you'll have an up-and-running server which you can than configure according to your needs.
Alternatively, you can always just start a new empty instance with Ubuntu OS and manually install Trains Server using our https://allegro.ai/docs/deploying_trains/trains_server_linux_mac/ .