Update PostgreSQL configuration and add Docker Compose setup

[mahata]

Change PostgreSQL port configuration and introduce a Docker Compose setup for easier database management during development.

[Copilot]

Pull request overview

Updates the local/dev and E2E database setup to use Docker Compose and a non-default Postgres host port, plus seeds an E2E “test” database on container init.

Changes:

• Replace README Docker-run instructions with Docker Compose up/down workflow.
• Introduce docker-compose.yml + init SQL to create a test database.
• Shift configured Postgres port defaults/sample values from 5432 to 5437 across app, Drizzle, and Playwright E2E config.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
README.md	Switches dev DB setup instructions to Docker Compose commands.
playwright.config.ts	Updates E2E webServer DB env vars (notably POSTGRES_PORT).
hono/db/index.ts	Changes default DB connection port fallback.
drizzle.config.ts	Changes default Drizzle CLI connection port fallback.
docker-entrypoint-initdb.d/create-test-db.sql	Creates a test database on first Postgres init.
docker-compose.yml	Adds a Postgres service with port mapping, volumes, and init scripts.
.env.sample	Updates sample DB port to match the new Compose host port.

---

You can also share your feedback on Copilot code review. Take the survey.