feat: add initial Docker Compose configuration and environment variables

.env.example

@@ -0,0 +1,19 @@
+# Ivatar Configuration
+# Copy this file to .env and customize the values
+
+# Site Configuration
+SITE_NAME=My Ivatar Instance
+BASE_URL=http://localhost:8080/avatar/
+SECURE_BASE_URL=https://your-domain.com/avatar/
+
+# Database Configuration
+POSTGRES_PASSWORD=ivatar_secure_password_change_me
+
+# Email Configuration
+EMAIL_BACKEND=django.core.mail.backends.console.EmailBackend
+SERVER_EMAIL=ivatar@your-domain.com
+DEFAULT_FROM_EMAIL=ivatar@your-domain.com
+
+# Mailgun Configuration (optional)
+# MAILGUN_API_KEY=your_mailgun_api_key
+# MAILGUN_SENDER_DOMAIN=your-domain.com