Initial commit: Lightning Lottery - Bitcoin Lightning Network powered lottery

Features:
- Lightning Network payments via LNbits integration
- Provably fair draws using CSPRNG
- Random ticket number generation
- Automatic payouts with retry/redraw logic
- Nostr authentication (NIP-07)
- Multiple draw cycles (hourly, daily, weekly, monthly)
- PostgreSQL and SQLite database support
- Real-time countdown and payment animations
- Swagger API documentation
- Docker support

Stack:
- Backend: Node.js, TypeScript, Express
- Frontend: Next.js, React, TailwindCSS, Redux
- Payments: LNbits

docker-compose.yml

@@ -0,0 +1,75 @@
+version: '3.8'
+
+services:
+  postgres:
+    image: postgres:14-alpine
+    container_name: lightning-lotto-db
+    environment:
+      POSTGRES_DB: lightning_lotto
+      POSTGRES_USER: lottery_user
+      POSTGRES_PASSWORD: lottery_password
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./back_end/src/database/schema.sql:/docker-entrypoint-initdb.d/schema.sql
+    ports:
+      - "5432:5432"
+    networks:
+      - lightning-lotto-network
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U lottery_user -d lightning_lotto"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  backend:
+    build:
+      context: ./back_end
+      dockerfile: Dockerfile
+    container_name: lightning-lotto-backend
+    depends_on:
+      postgres:
+        condition: service_healthy
+    environment:
+      APP_PORT: 3000
+      APP_BASE_URL: ${APP_BASE_URL:-http://localhost:3000}
+      FRONTEND_BASE_URL: ${FRONTEND_BASE_URL:-http://localhost:3001}
+      NODE_ENV: production
+      DATABASE_URL: postgresql://lottery_user:lottery_password@postgres:5432/lightning_lotto
+      LNBITS_API_BASE_URL: ${LNBITS_API_BASE_URL}
+      LNBITS_ADMIN_KEY: ${LNBITS_ADMIN_KEY}
+      LNBITS_WEBHOOK_SECRET: ${LNBITS_WEBHOOK_SECRET}
+      JWT_SECRET: ${JWT_SECRET}
+      ADMIN_API_KEY: ${ADMIN_API_KEY}
+      DEFAULT_TICKET_PRICE_SATS: ${DEFAULT_TICKET_PRICE_SATS:-1000}
+      DEFAULT_HOUSE_FEE_PERCENT: ${DEFAULT_HOUSE_FEE_PERCENT:-5}
+      DRAW_SCHEDULER_INTERVAL_SECONDS: 60
+      CYCLE_GENERATOR_INTERVAL_SECONDS: 300
+    ports:
+      - "3000:3000"
+    networks:
+      - lightning-lotto-network
+    restart: unless-stopped
+
+  frontend:
+    build:
+      context: ./front_end
+      dockerfile: Dockerfile
+    container_name: lightning-lotto-frontend
+    depends_on:
+      - backend
+    environment:
+      NEXT_PUBLIC_API_BASE_URL: ${NEXT_PUBLIC_API_BASE_URL:-http://localhost:3000}
+      NEXT_PUBLIC_APP_BASE_URL: ${NEXT_PUBLIC_APP_BASE_URL:-http://localhost:3001}
+    ports:
+      - "3001:3000"
+    networks:
+      - lightning-lotto-network
+    restart: unless-stopped
+
+volumes:
+  postgres_data:
+
+networks:
+  lightning-lotto-network:
+    driver: bridge
+