"Docker compose" does nothing

[pocky6]

Hi,

I'm stuck when I follow the instructions of the readme file:

docker compose -f docker-compose.gpu.yml up
The new 'docker compose' command is currently experimental. To provide feedback or request new features please open issues at https://github.com/docker/compose-cli
services.app.ports array items[0,1] must be unique

... and nothing happens.

What am I missing ?

[Rosenberg-Josh]

Have you installed docker desktop and set up the .env file per the instructions in the readme?