I've been using Docker for... a long time now. So having a docker-compose.yml file in a project is pretty natural and common for me.

Today I learned that the preferred file is now compose.yaml (though compose.yml is also allowed), and that the docker-compose naming is only supported for backwards compatibility. (See the Compose file documentation if you don't believe me!)

Funny enough, the compose tooling doesn't call this out, even though it now calls out the fact you don't need to use the version setting any more.