hi, i'm trying to get started running keto on docker compose with a namespace definition that i used OPL to define. I wanted to validate the definition using the CLI:

keto namespace validate namespaces.ts

however, i get an error saying that it does not expect a .ts file. is there another way to validate? or do i just have to try running the docker container with the config pointing to my namepsaces.ts file and see what happens? thanks all!