ASP.Net Identity 2.1 inside MVC5 application using Unity

I am upgrading my ASP.Net MVC5 Application from Identity 1 to 2.1. One day later, I launched it ... but I cannot check the roles for my users (by IsInRole or Authorize Attribute). I assume this is because MVC does not allow user and role manager as my application uses Unity DI and Identity 2 seems to be based on OwinContext with the following configuration:

app.CreatePerOwinContext(ApplicationDbContext.Create);
app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);
app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

      

        
        
        
      

    

Is there an easy way, tutorial or documentation to make Identity 2 work with external dependency injection?

[Edit] Now Unity DI seems to work a bit (thanks to meep).

I modified Startup.Auth.cs by adding ConfigureAuth (IAppBuilder) function:

var container = UnityConfig.Container;
var dbContext = container.Resolve<ApplicationDbContext>();

container.RegisterInstance<IAppBuilder>(app, new ContainerControlledLifetimeManager());
container.RegisterType<IUserStore<ApplicationUser>, UserStore<ApplicationUser>>();
container.RegisterType<UserManager<ApplicationUser>, ApplicationUserManager>();
container.RegisterType<IRoleStore<IdentityRole, string>, RoleStore<IdentityRole>>();
container.RegisterType<RoleManager<IdentityRole>, ApplicationRoleManager>();

// [Edit 2]
app.CreatePerOwinContext<ApplicationDbContext>((options, owinContext) => container.Resolve<ApplicationDbContext>());
app.CreatePerOwinContext<UserManager<ApplicationUser>>((options, owinContext) => container.Resolve<UserManager<ApplicationUser>>());
app.CreatePerOwinContext<RoleManager<IdentityRole>>((options, owinContext) => container.Resolve<RoleManager<IdentityRole>>());

      

        
        
        
      

    

In my UnitiConfig.cs file, I added a declaration for the Singleton container (used above).

In IdentityConfig.cs I omitted the Create method and changed the ctor to

public ApplicationUserManager(IUserStore<ApplicationUser> store, ApplicationDbContext dbContext)
        : base(store)
{
    this.Initialize(dbContext);
}

private void Initialize(ApplicationDbContext dbContext)
{
    // Configurer la logique de validation pour les noms d'utilisateur
    this.UserValidator = new UserValidator<ApplicationUser>(this)
    {
        AllowOnlyAlphanumericUserNames = false,
        RequireUniqueEmail = true
    };
    // ... more code...
}

public class ApplicationRoleManager : RoleManager<IdentityRole>
{
    public ApplicationRoleManager(IRoleStore<IdentityRole, string> roleStore)
        : base(roleStore)
    {
    }
}

      

        
        
        
      

    

I can authenticate users ... but UserManager.GetRoles () is always empty. Also [Authorize (Roles = "myrol") rejects each user ...