build: 添加Dockerfile用于构建docker镜像

- 基于node:22-alpine构建docker镜像

.dockerignore

@@ -0,0 +1,58 @@
+# ------------------------
+# Node / Package Manager
+# ------------------------
+node_modules
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+.pnpm-store
+
+# Nuxt build outputs
+.output
+.nuxt
+dist
+.cache
+.unimport
+.h3
+.nitro
+**/.nitro
+
+# Dev tools / OS files
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+logs
+!.gitkeep
+
+# Local env files (runtime env should be provided by Docker/K8s)
+.env
+.env.*
+!.env.example
+
+# Git
+.git
+.gitignore
+.gitattributes
+
+# Editor / IDE
+.vscode
+.idea
+*.swp
+*.swo
+
+# Tests
+coverage
+*.lcov
+
+# Docker
+Dockerfile*
+docker-compose.yml
+
+# CI / Local build artifacts
+*.tgz
+*.zip
+*.tar
+*.mdx