Questions about lumen source code

In the Application.php constructor of lumen, how to start the container

<code>vendor/laravel/lumen-framework/src/Application.php line:103 
</code>

<code>vendor/illuminate/container/Container.php line：1159
</code>

I don’t understand its function and purpose.

Reply content:

In the Application.php constructor of lumen, how to start the container

<code>vendor/laravel/lumen-framework/src/Application.php line:103 
</code>

<code>vendor/illuminate/container/Container.php line：1159
</code>

I don’t understand its function and purpose.

Looked at the source code of Lumen 5.3:

<code class="php">protected function bootstrapContainer()
{
    static::setInstance($this);

    $this->instance('app', $this);
    $this->instance('Laravel\Lumen\Application', $this);

    $this->instance('path', $this->path());

    $this->registerContainerAliases();
}</code>

Combined with $this->instance(...), it is to implement the singleton mode.