How do I resolve an Entity Framework error creating the db context

I have created my first (Blazer) project with Entity Framework. I got enable-migrations and update-database to work. Now, I get the following build error:

Error while validating the service descriptor 'ServiceType: Timesheet.Models.DatabaseContext Lifetime: Singleton
ImplementationType: Timesheet.Models.DatabaseContext': Unable to resolve service for type 'Microsoft.EntityFrameworkCore.DbContextOptions`1[Timesheet.Models.DatabaseContext]' while attempting to activate 'Timesheet.Models.DatabaseContext'.

The error is thrown at this point:

I've tried reading the error multiple times but I'm not sure what it's referring to. I'm hoping someone can point me in the right direction. Here is the db service in my startup.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();
    services.AddScoped(p =>
           p.GetRequiredService<IDbContextFactory<DatabaseContext>>().CreateDbContext());
}

I just have no idea where to go next. Any suggestions are appreciated.

Edit 1: Adding the full Program.cs file

using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.OpenIdConnect;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Mvc.Authorization;
using Microsoft.Identity.Web;
using Microsoft.Identity.Web.UI;
using Timesheet.Data;
using Timesheet.Models;
using Microsoft.EntityFrameworkCore;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddSingleton<DatabaseContext>();

// Add services to the container.
builder.Services.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
    .AddMicrosoftIdentityWebApp(builder.Configuration.GetSection("AzureAd"));
builder.Services.AddControllersWithViews()
    .AddMicrosoftIdentityUI();

builder.Services.AddAuthorization(options =>
{
    // By default, all incoming requests will be authorized according to the default policy
    options.FallbackPolicy = options.DefaultPolicy;
});

builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor()
    .AddMicrosoftIdentityConsentHandler();
//builder.Services.AddSingleton<WeatherForecastService>();

var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
builder.Services.AddDbContext<DatabaseContext>(options =>
    options.UseSqlServer(connectionString));

var app = builder.Build();


// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();

app.UseAuthentication();
app.UseAuthorization();

app.MapControllers();
app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();