I would like to add custom header to the token obtained by the user (to be used by Hasura). The way to go seems to add a script mapper.
So I am heading to client - > mappers -> create
But I can’t find the script mapper in the mapper type list. I am using keycloak in docker (latest). It runs with the -Dkeycloak.profile.feature.upload_scripts=enable command, but I don’t know where to upload the script and in which format
Is there another place where i can define the mapper?