docker-compose.yaml

services:
  postgres:
    image: postgres:18-alpine
    environment:
      POSTGRES_USER: ozalid
      POSTGRES_PASSWORD: ozalid
      POSTGRES_DB: ozalid
    ports:
      # Off the default port on purpose, like the API on 8090: a developer
      # machine usually already runs a Postgres on 5432, and a collision here
      # is silent. Override with OZALID_PG_PORT.
      - "${OZALID_PG_PORT:-5442}:5432"
    volumes:
      # Postgres 18+ wants a single mount at /var/lib/postgresql, not at its
      # data subdirectory — that is what makes pg_upgrade --link possible later.
      - pgdata:/var/lib/postgresql
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ozalid"]
      interval: 5s
      timeout: 3s
      retries: 10

  # A mailbox the end-to-end suite can read.
  #
  # Sign-in sends a message, and a suite that reached into the database for the
  # link would leave the sending untested — the half most likely to be
  # misconfigured on a real instance.
  mailpit:
    image: axllent/mailpit:v1.28
    ports:
      # Off 1025 and 8025 on purpose, like Postgres off 5432 and the API off
      # 8080: a developer machine often already runs a mailpit, and the
      # collision is only loud the first time.
      - "${OZALID_SMTP_PORT:-1045}:1025"
      - "${OZALID_MAILPIT_PORT:-8045}:8025"
    healthcheck:
      test: ["CMD", "/mailpit", "readyz"]
      interval: 5s
      timeout: 3s
      retries: 10

volumes:
  pgdata: