Terraform third party providers on AZure Devops

im trying to use a third-party provider in Azure DevOps.

i have the executable (binary or exe for windows), but where should i place the provider?
Should i use this https://www.terraform.io/docs/configuration/providers.html ?

or update my .terraformrc (or terraform.rc on windows)?

Im not having any output from terraform in azure pipelines.

Looks like i will answer myself:

plugins should be registered in
where mypluginname should be:

a name like this it wont work: