# PostgreSQL 16 for the Outbox and Inbox.
#
# logical replication is enabled so the optional Debezium CDC relay can be exercised against the
# same database the polling relay uses; the two must produce an identical wire contract.
services:
  postgres:
    image: postgres:16-alpine
    container_name: messaging-postgres
    ports:
      - "5432:5432"
    environment:
      POSTGRES_DB: messaging
      POSTGRES_USER: messaging
      POSTGRES_PASSWORD: messaging
    command:
      - "postgres"
      - "-c"
      - "wal_level=logical"
      - "-c"
      - "max_replication_slots=4"
      - "-c"
      - "max_wal_senders=4"
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U messaging -d messaging"]
      interval: 5s
      timeout: 5s
      retries: 20