docker-compose.custom.yml

# This file builds a local image from the codebase folder
version: "3.7"
networks:
  default:
    internal: true
  gateway:
    name: gateway
volumes:
  drupal-sites-data:
  solr-data:
services:
  # The service name is drupal that is the default host name used by micro-services etc.
  drupal:
    build:
      context: ./
      dockerfile: ${PROJECT_DRUPAL_DOCKERFILE:-./Dockerfile}
    environment:
      #
      # Set environment variables that allow use to install from an existing configuration.
      #
      DRUPAL_DEFAULT_CONFIGDIR: /var/www/drupal/config/sync
      DRUPAL_DEFAULT_INSTALL_EXISTING_CONFIG: "true"
      DRUPAL_DEFAULT_PROFILE: minimal
    volumes:
      - drupal-sites-data:/var/www/drupal/web/sites/default/files
      # Used to dump solr configuration directly into solr instance via the search_api_solr module.
      - solr-data:/opt/solr/server/solr
    depends_on:
      # Requires a the very minimum a database.
      - ${DRUPAL_DATABASE_SERVICE}
  # Extends docker-compose.solr.yml so that they share a volume.
  solr:
    volumes:
      # On a production site you may not want to take this approach but instead refer to each of the cores
      # data directories specifically and maintain the configuration as part of a customized image, where 
      # in your configuration is Solr managed under source control somewhere.
      - solr-data:/opt/solr/server/solr