docker-compose.yml

services:
  db:
    image: postgres:17
    restart: unless-stopped
    environment:
      POSTGRES_DB: horizon
      POSTGRES_USER: horizon
      POSTGRES_PASSWORD: 123UsedForTestOnly
      POSTGRES_INITDB_ARGS: --encoding=UTF-8 --lc-collate=C --lc-ctype=C
    ports:
      - 5432:5432
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: pg_isready
      start_period: 5s
      interval: 30s
      timeout: 5s
      retries: 3

  backend:
    image: mtsrus/horizon-backend:${VERSION:-latest}
    restart: unless-stopped
    env_file: .env.docker
    environment:
      # list here usernames which should be assigned SUPERADMIN role on application start
      HORIZON__ENTRYPOINT__ADMIN_USERS: admin
      # PROMETHEUS_MULTIPROC_DIR is required for multiple workers, see:
      # https://prometheus.github.io/client_python/multiprocess/
      PROMETHEUS_MULTIPROC_DIR: /tmp/prometheus-metrics
    # tmpfs dir is cleaned up each container restart
    tmpfs:
      - /tmp/prometheus-metrics:mode=1777
    ports:
      - 8000:8000
    depends_on:
      db:
        condition: service_healthy

volumes:
  postgres_data: