# Docker Compose configuration for the postgres_session_service sample.
#
# This file defines a PostgreSQL service used to demonstrate ADK's
# DatabaseSessionService with a persistent backend. It sets up a
# postgres:16-alpine container with:
# - Default credentials (user: postgres, password: postgres)
# - A pre-created database named 'adk_sessions'
# - Port 5432 exposed for local access
# - A named volume 'postgres_data' for data persistence

services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: adk_sessions
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data

volumes:
  postgres_data: