Multi Container Depth Test

class Example extends Phaser.Scene
{
    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v385');
        this.load.image('buttonBG', 'assets/sprites/button-bg.png');
    }

    create ()
    {
        //  Normal image
        this.add.image(200, 150, 'buttonBG').setAngle(20);

        //  Single level container
        const containerImage = this.add.image(0, 0, 'buttonBG').setAngle(20);
        const container = this.add.container(600, 150, containerImage).setAngle(20);

        //  2 level container
        const containerImage2 = this.add.image(0, 0, 'buttonBG').setAngle(20);
        const container2a = this.add.container(0, 0, containerImage2).setAngle(20);
        const container2b = this.add.container(200, 450, container2a).setAngle(20);

        //  3 level container
        const containerImage3 = this.add.image(0, 0, 'buttonBG').setAngle(20);
        const container3a = this.add.container(0, 0, containerImage3).setAngle(20);
        const container3b = this.add.container(0, 0, container3a).setAngle(20);
        const container3c = this.add.container(600, 450, container3b).setAngle(20);
    }
}

const config = {
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    backgroundColor: '#010101',
    parent: 'phaser-example',
    scene: Example
};

const game = new Phaser.Game(config);