windmill/examples/deploy/instance-config-iac/docker-compose.yml

version: "3.7"

# Example: Windmill with declarative instance configuration via sync-config.
#
# Usage:
#   1. Copy .env.example to .env and fill in your secrets
#   2. Edit windmill-config.yaml with your desired settings
#   3. docker compose up -d
#
# The windmill_config_sync service runs once at startup, applies the YAML
# config to the database, then exits. To re-apply after editing the config:
#   docker compose run --rm windmill_config_sync

services:
  db:
    image: postgres:16
    shm_size: 1g
    restart: unless-stopped
    volumes:
      - db_data:/var/lib/postgresql/data
    expose:
      - 5432
    environment:
      POSTGRES_PASSWORD: changeme
      POSTGRES_DB: windmill
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 10s
      timeout: 5s
      retries: 5

  # One-shot init container that syncs the YAML config to the database.
  # Resolves envRef fields from container environment, then exits.
  windmill_config_sync:
    image: ${WM_IMAGE}
    restart: "no"
    command: ["windmill", "sync-config", "/config/windmill-config.yaml"]
    environment:
      - DATABASE_URL=${DATABASE_URL}
      # Secrets are passed as env vars, referenced via envRef in the YAML
      - WM_LICENSE_KEY=${WM_LICENSE_KEY}
      - SMTP_PASSWORD=${SMTP_PASSWORD}
    volumes:
      - ./windmill-config.yaml:/config/windmill-config.yaml:ro
    depends_on:
      db:
        condition: service_healthy

  windmill_server:
    image: ${WM_IMAGE}
    restart: unless-stopped
    expose:
      - 8000
    environment:
      - DATABASE_URL=${DATABASE_URL}
      - MODE=server
    depends_on:
      db:
        condition: service_healthy
      windmill_config_sync:
        condition: service_completed_successfully

  windmill_worker:
    image: ${WM_IMAGE}
    deploy:
      replicas: 2
    restart: unless-stopped
    environment:
      - DATABASE_URL=${DATABASE_URL}
      - MODE=worker
      - WORKER_GROUP=default
    depends_on:
      db:
        condition: service_healthy

  windmill_worker_native:
    image: ${WM_IMAGE}
    restart: unless-stopped
    environment:
      - DATABASE_URL=${DATABASE_URL}
      - MODE=worker
      - WORKER_GROUP=native
      - NUM_WORKERS=8
      - SLEEP_QUEUE=200
    depends_on:
      db:
        condition: service_healthy

volumes:
  db_data: null