new file: .dockerignore

new file:   .env.example
	new file:   Dockerfile
	modified:   backend/.env.example
	modified:   backend/package.json
	renamed:    backend/src/migrations/run.ts -> backend/src/scripts/run.ts
	renamed:    backend/src/migrations/seed.ts -> backend/src/scripts/seed.ts
	new file:   docker-compose.external-db.yml
	new file:   docker-compose.yml

docker-compose.yml

@@ -0,0 +1,63 @@
+# ============================================
+# KIS API Builder - Docker Compose
+# ============================================
+# Default setup with built-in PostgreSQL
+# Just run: docker compose up -d
+#
+# For external database, use:
+#   docker compose -f docker-compose.external-db.yml up -d
+# ============================================
+
+services:
+  # PostgreSQL Database (built-in)
+  db:
+    image: postgres:16-alpine
+    container_name: kis-api-builder-db
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: api_builder
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: ${DB_PASSWORD:-postgres}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./backend/src/migrations:/docker-entrypoint-initdb.d:ro
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres -d api_builder"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
+    networks:
+      - kis-network
+
+  # Application (Backend + Frontend)
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: kis-api-builder-app
+    restart: unless-stopped
+    ports:
+      - "${APP_PORT:-3000}:3000"
+    environment:
+      NODE_ENV: production
+      PORT: 3000
+      DB_HOST: db
+      DB_PORT: 5432
+      DB_NAME: api_builder
+      DB_USER: postgres
+      DB_PASSWORD: ${DB_PASSWORD:-postgres}
+      JWT_SECRET: ${JWT_SECRET:-change-this-secret-in-production}
+      JWT_EXPIRES_IN: ${JWT_EXPIRES_IN:-24h}
+    depends_on:
+      db:
+        condition: service_healthy
+    networks:
+      - kis-network
+
+volumes:
+  postgres_data:
+
+networks:
+  kis-network:
+    driver: bridge