feat: add Dockerfile

[honestAnt]

添加Docker打包配置

[Copilot]

Pull Request Overview

This PR adds Docker containerization support for a VitePress application. The changes include Docker build configuration, nginx setup, and documentation for deployment.

• Added multi-stage Dockerfile for building and serving the VitePress application
• Created nginx configuration for serving the built static files
• Provided Docker build and run documentation with example commands

Reviewed Changes

Copilot reviewed 4 out of 8 changed files in this pull request and generated 3 comments.

File	Description
Dockerfile	Multi-stage build configuration using Node.js for building and nginx for serving
default.conf	Nginx server configuration with SPA routing support and cache headers
Docker.md	Documentation for building and running the Docker container
images/README.md	Empty images directory placeholder file

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