observation/containers/docker/config/grafana/provisioning/datasources/datasource.yml

apiVersion: 1

datasources:
    - name: Prometheus
      type: prometheus
      access: proxy
      url: http://host.docker.internal:9090
      editable: false
      jsonData:
        httpMethod: POST
        exemplarTraceIdDestinations:
          - name: trace_id
            url: http://localhost:9411/zipkin/traces/$${__value.raw}