chore: 增加 Docker 单容器部署

生产用 Dockerfile + compose 嵌入前端二进制，run.sh docker 一键构建启动。

Co-authored-by: Cursor <cursoragent@cursor.com>

.dockerignore

@@ -0,0 +1,26 @@
+.git
+.zcode
+.claude
+.env
+.env.*
+!.env.example
+*.md
+logs
+*.pid
+*.log
+*.db
+*.sqlite
+*.sqlite3
+opsx-licence
+backend/backend
+backend/server
+backend/static/*
+!backend/static/.gitkeep
+frontend/node_modules
+frontend/dist
+frontend/logs
+**/*_test.go
+**/coverage.out
+.DS_Store
+.idea
+.vscode