composer 在软件管理安装了，composer 文件也在这个目录下
```
-rw-r--r-- 1 root root 3471 Jul 19 20:52 composer.json
-rw-r--r-- 1 root root 278567 Jul 19 20:52 composer.lock
```
wenlin422020-07-19 23:26:59
执行：composer install --no-dev
```
Composer could not find a composer.json file in /
To initialize a project, please create a composer.json file as described in the https://getcomposer.org/ "Getting Started" section
```