Drone template extension invalid with .yaml and .yml

[joaostorrer]

I created a yaml file named test.yaml with this configuration:

kind: pipeline
type: docker
name: default
steps:
   - name: {{ .input.name }}
     image: {{ .input.image }}
     commands:
        - {{ .input.commands }}

But when I try to add the template with the command drone template add --namespace test --name test --data @test.yaml it raises this error:

client error 400: {"message":"Template extension invalid. Must be yaml, starlark or jsonnet"}

I tried to change the extension to .yml, execute the command without the "@", pass the full path of the file, but the error continues.

I'm using CentOS 7.