feat: add Docker support with multi-stage build and CI/CD workflow

- Introduced Dockerfile for multi-stage build process using Node.js and Nginx.
- Added .dockerignore to exclude unnecessary files from Docker context.
- Created nginx.conf for server configuration, including gzip compression and SPA routing.
- Implemented Gitea CI/CD workflow for building and pushing Docker images on version tags.

.dockerignore

@@ -0,0 +1,62 @@
+# 依赖
+node_modules
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# 构建产物
+dist
+dist-ssr
+*.local
+
+# 编辑器
+.vscode
+.idea
+*.swp
+*.swo
+*~
+
+# 操作系统
+.DS_Store
+Thumbs.db
+
+# Git
+.git
+.gitignore
+.gitattributes
+
+# CI/CD
+.gitea
+.github
+.gitlab-ci.yml
+
+# Docker
+Dockerfile
+.dockerignore
+docker-compose.yaml
+docker-compose.*.yaml
+compose*yaml
+
+# 测试
+coverage
+.nyc_output
+
+# 环境变量
+.env
+.env.local
+.env.*.local
+
+# 日志
+logs
+*.log
+
+# 临时文件
+tmp
+temp
+
+# 文档
+README.md
+LICENSE
+*.md
+