Creating DB through DB up before executing migrations

I am having the following exception:

System.Data.SqlClient.SqlException (0x80131904): Cannot open database "ScraperDB" requested by the login. The login failed.
Login failed for user 'myname'

I guess it's normal that the login fails but the DB hasn't been created yet!

What I do is:

var configuration = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
.AddJsonFile($"appsettings.{Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") ?? "Production"}.json", optional: true)
.Build();   


var connectionString = configuration["ConnectionString"];
EnsureDatabase.For.SqlDatabase(connectionString);

where my connection string is:

"ConnectionString": "Server=.;Database=ScraperDB;Integrated Security=True;"

after the exception is thrown and the console crashes, I check out the DB and it's created..