sets up docker compose

docs/design/development-setup.md

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+# Development Setup
+
+This document describes how to set up a development environment for the Email Organizer application.
+
+## Prerequisites
+
+- Docker and Docker Compose
+- Python 3.10+
+
+## Services
+
+The development environment consists of two services:
+
+1. **PostgreSQL Database**: A non-persistent PostgreSQL instance for development
+2. **IMAP Server**: A fake IMAP server with predefined users and folders
+
+## Setup Commands
+
+To set up the development environment, run:
+
+```bash
+flask setup-dev
+```
+
+This command will:
+1. Create necessary directories
+2. Start PostgreSQL and IMAP services via Docker Compose
+3. Display connection information
+
+## Service Details
+
+### PostgreSQL
+
+- Host: localhost
+- Port: 5432
+- Database: email_organizer_dev
+- User: postgres
+- Password: password
+
+### IMAP Server
+
+- Host: localhost
+- Port: 1143
+- Users:
+  - user1@example.com / password1
+  - user2@example.com / password2
+- Folders:
+  - INBOX
+  - Pending
+  - Work
+  - Personal
+  - Receipts
+  - Marketing
+  - Archived
+
+## Environment Configuration
+
+After running `flask setup-dev`, copy the example environment file:
+
+```bash
+cp .env.example .env
+```
+
+The default configuration should work with the development services. You can modify the `.env` file if needed.