services/grafana/docker-compose.postgres.yml

version: "3.8"

services:
  grafana:
    environment:
      # https://grafana.com/docs/grafana/latest/administration/configuration/#database
      GF_DATABASE_TYPE: postgres
      GF_DATABASE_HOST: ${POSTGRES_CONTAINER_NAME:-postgres} # Default name is same as ../postgres/docker-compose.yml:8
      GF_DATABASE_NAME: ${POSTGRES_DB:?err}
      GF_DATABASE_USER: ${POSTGRES_USER:?err}
      GF_DATABASE_PASSWORD: ${POSTGRES_PASSWORD:?err}