docker-compose.yml

# Local-only runner — convenient for quick iteration without kind.
#
# Two datasource backends are supported:
#
#   Postgres (default):
#     docker compose up -d postgres customer360
#
#   MySQL 8 (compose profile "mysql"):
#     SPRING_PROFILES_ACTIVE=mysql \
#     docker compose --profile mysql up -d mysql customer360
#
# The Postgres service has no `profiles:` tag, so it starts on any
# `docker compose up` without arguments — backwards-compatible with the
# pre-existing flow. The MySQL service is tagged `profiles: [mysql]` so
# it only boots when explicitly requested.
#
# For the demo, prefer ./deploy_kind.sh (matches production topology).
services:
  postgres:
    image: postgres:16-alpine
    container_name: customer360-postgres
    environment:
      POSTGRES_DB: customer360
      POSTGRES_USER: customer360
      POSTGRES_PASSWORD: customer360
      PGDATA: /var/lib/postgresql/data/pgdata
    ports:
      - "5432:5432"
    volumes:
      - pgdata:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD", "pg_isready", "-U", "customer360", "-d", "customer360"]
      interval: 5s
      timeout: 3s
      retries: 10

  mysql:
    image: mysql:8.0
    container_name: customer360-mysql
    profiles: ["mysql"]
    environment:
      MYSQL_DATABASE: customer360
      MYSQL_USER: customer360
      MYSQL_PASSWORD: customer360
      MYSQL_ROOT_PASSWORD: customer360-root
    command:
      - --character-set-server=utf8mb4
      - --collation-server=utf8mb4_unicode_ci
      - --default-authentication-plugin=caching_sha2_password
    ports:
      - "3306:3306"
    volumes:
      - mysqldata:/var/lib/mysql
    healthcheck:
      test:
        - CMD
        - mysqladmin
        - ping
        - -h
        - localhost
        - -u
        - customer360
        - -pcustomer360
      interval: 5s
      timeout: 3s
      retries: 20

  customer360:
    build: .
    container_name: customer360
    image: customer360:local
    # No depends_on block here — compose wires the right DB based on the
    # profile. When the default compose profile runs, only `postgres` is
    # reachable; when `--profile mysql` is used, only `mysql` is up.
    env_file:
      - .env
    environment:
      # Selects Spring profile; default keeps backwards compatibility.
      SPRING_PROFILES_ACTIVE: ${SPRING_PROFILES_ACTIVE:-postgres}
      # The default below assumes the Postgres service. When running with
      # --profile mysql the host command should override with:
      #   SPRING_DATASOURCE_URL=jdbc:mysql://mysql:3306/customer360?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC
      SPRING_DATASOURCE_URL: ${SPRING_DATASOURCE_URL:-jdbc:postgresql://postgres:5432/customer360}
      SPRING_DATASOURCE_USERNAME: ${SPRING_DATASOURCE_USERNAME:-customer360}
      SPRING_DATASOURCE_PASSWORD: ${SPRING_DATASOURCE_PASSWORD:-customer360}
    ports:
      - "8080:8080"
    restart: unless-stopped

volumes:
  pgdata:
  mysqldata: