examples/python/flask-postgres/compose.yml at main · base-14/examples · GitHub

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# Flask + PostgreSQL + OpenTelemetry Example
# Docker Compose Configuration | Dec 2025

services:
  # ==========================================================================
  # Flask Application
  # ==========================================================================
  app:
    build:
      context: .
      target: runtime
    ports:
      - "8000:8000"
    environment:
      - FLASK_APP=wsgi:app
      - FLASK_ENV=development
      - DEBUG=true
      - SECRET_KEY=${SECRET_KEY:-dev-secret-key-change-in-production}
      - DATABASE_URL=postgresql+psycopg://postgres:postgres@postgres:5432/flask_app
      - REDIS_URL=redis://redis:6379/0
      - OTEL_SERVICE_NAME=flask-postgres-app
      - OTEL_EXPORTER_OTLP_ENDPOINT=http://otel-collector:4318
      - OTEL_RESOURCE_ATTRIBUTES=deployment.environment=${SCOUT_ENVIRONMENT:-development},service.namespace=examples
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
      otel-collector:
        condition: service_started
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8000/api/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 10s
    networks:
      - app-network

  # ==========================================================================
  # Celery Worker
  # ==========================================================================
  celery:
    build:
      context: .
      target: runtime
    command: celery -A app.jobs.celery worker --loglevel=info
    environment:
      - FLASK_APP=wsgi:app
      - SECRET_KEY=${SECRET_KEY:-dev-secret-key-change-in-production}
      - DATABASE_URL=postgresql+psycopg://postgres:postgres@postgres:5432/flask_app
      - REDIS_URL=redis://redis:6379/0
      - OTEL_SERVICE_NAME=flask-postgres-worker
      - OTEL_EXPORTER_OTLP_ENDPOINT=http://otel-collector:4318
      - OTEL_RESOURCE_ATTRIBUTES=deployment.environment=${SCOUT_ENVIRONMENT:-development},service.namespace=examples
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
      otel-collector:
        condition: service_started
    networks:
      - app-network

  # ==========================================================================
  # PostgreSQL Database
  # ==========================================================================
  postgres:
    image: postgres:18-alpine
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=flask_app
    volumes:
      - postgres_data:/var/lib/postgresql/data
    ports:
      - "5432:5432"
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 5s
      timeout: 5s
      retries: 5
    networks:
      - app-network

  # ==========================================================================
  # Redis
  # ==========================================================================
  redis:
    image: redis:8-alpine
    volumes:
      - redis_data:/data
    ports:
      - "6379:6379"
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 5s
      retries: 5
    networks:
      - app-network

  # ==========================================================================
  # OpenTelemetry Collector
  # ==========================================================================
  otel-collector:
    image: otel/opentelemetry-collector-contrib:0.147.0
    command: ["--config=/etc/otelcol-config.yaml"]
    volumes:
      - ./config/otel-config.yaml:/etc/otelcol-config.yaml:ro
    ports:
      - "4317:4317"   # OTLP gRPC
      - "4318:4318"   # OTLP HTTP
      - "13133:13133" # Health check
    env_file:
      - path: .env
        required: false
    environment:
      - SCOUT_ENDPOINT=${SCOUT_ENDPOINT:-http://localhost:4318}
      - SCOUT_CLIENT_ID=${SCOUT_CLIENT_ID:-}
      - SCOUT_CLIENT_SECRET=${SCOUT_CLIENT_SECRET:-}
      - SCOUT_TOKEN_URL=${SCOUT_TOKEN_URL:-}
      - SCOUT_ENVIRONMENT=${SCOUT_ENVIRONMENT:-development}
    networks:
      - app-network

volumes:
  postgres_data:
  redis_data:

networks:
  app-network:
    driver: bridge