prometheus/server/init.yml

parameters:
  _param:
    prometheus_server_config_directory: /srv/prometheus
    prometheus_server_data_directory: /data
    prometheus_server_host_config_directory: /srv/volumes/local/prometheus/config
    prometheus_server_host_data_directory: /srv/volumes/local/prometheus/data
  prometheus:
    server:
      version: 2.0
      dir:
        data: ${_param:prometheus_server_host_data_directory}
        config: ${_param:prometheus_server_host_config_directory}
        config_in_container: ${_param:prometheus_server_config_directory}