feat: Add Docker containerization for consistent deployment

- Multi-stage Dockerfile with Node.js 20 Alpine base
- Production and development docker-compose configurations
- Health check API endpoint for container monitoring
- Build and deployment scripts with versioning support
- Port 3000 configuration for nginx compatibility
- Non-root user and security hardening
- Resource limits and logging configuration
- Package.json scripts for Docker operations

This eliminates dependency conflicts and provides reproducible deployments.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -13,7 +13,15 @@
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
     "mcp:stripe": "npx @stripe/mcp --tools=all --api-key=$STRIPE_SECRET_KEY",
-    "mcp:stripe:debug": "npx @modelcontextprotocol/inspector npx @stripe/mcp --tools=all --api-key=$STRIPE_SECRET_KEY"
+    "mcp:stripe:debug": "npx @modelcontextprotocol/inspector npx @stripe/mcp --tools=all --api-key=$STRIPE_SECRET_KEY",
+    "docker:build": "./scripts/docker-build.sh",
+    "docker:build:version": "./scripts/docker-build.sh",
+    "docker:deploy": "./scripts/docker-deploy.sh",
+    "docker:up": "docker-compose up -d",
+    "docker:down": "docker-compose down",
+    "docker:logs": "docker-compose logs -f",
+    "docker:prod:up": "docker-compose -f docker-compose.prod.yml up -d",
+    "docker:prod:down": "docker-compose -f docker-compose.prod.yml down"
   },
   "dependencies": {
     "@astrojs/check": "^0.9.4",