what to add to my container ioc ? php

i create my own container, i made"bind" method that get "string $alias" and "Closure $closure". the method bind the alias to the object on the $container array , like that:

public function bind(string $alias,$closure)
{
    $this->container[$alias] = $closure();
}

The second method is "call", that simply call to some instance from the $container. Of course first the method check if the given alias exists, and if doesnt throw an exception

public function call(string $alias)
{
    if(array_key_exists($alias,$this->container))
        return $this->container[$alias];
    throw new \Exception();
}

is that good ? what more i need to add ? cause i saw on laravel for example that the container is full of method and props, and i dont know why. its just bind and call, isnt ?