inject and use services in program.cs pipeline

I have a service that I need to inject and use inside the project pipeline

//Register Service
builder.Services.AddScoped<IDbInitializer, DbInitializer>();

//Build App and Inject Service
var app = builder.Build();
var dbInitializer = app.Services.GetService<IDbInitializer>();

//Use 
dbInitializer.Initialize();

I will update the following problem when injecting this service (or any other service)

problem image

>Solution :

In order to require a scoped service, you need to initiate a scope inside which it will live: https://learn.microsoft.com/en-us/aspnet/core/fundamentals/dependency-injection?view=aspnetcore-7.0#resolve-a-service-at-app-start-up

//Register Service
builder.Services.AddScoped<IDbInitializer, DbInitializer>();

//Build App and Inject Service
var app = builder.Build();
using (IServiceScope scope = app.Services.CreateScope())
{
    IDbInitializer dbInitializer = scope.ServiceProvider.GetRequiredService<IDbInitializer>();

    //Use 
    dbInitializer.Initialize();
}