AutoInjector.cs

using UnityEngine;
using VContainer;
using VContainer.Unity;

public class AutoInjector : MonoBehaviour
{
    void Awake()
    {
        var lifetimeScope = LookupScope();
        if (lifetimeScope != null)
        {
            lifetimeScope.Container.InjectGameObject(gameObject);
        }
    }

    LifetimeScope LookupScope()
    {
        // Find closest
        var t = transform.parent;
        while (t != null)
        {
            var scope = t.GetComponentInChildren<LifetimeScope>();
            if (scope != null)
                return scope;
            t = t.parent;
        }

        // Find root
        var rootGameObjects = gameObject.scene.GetRootGameObjects();
        foreach (var root in rootGameObjects)
        {
            var scope = root.GetComponentInChildren<LifetimeScope>();
            if (scope != null)
                return scope;
        }
        return null;
    }
}