Program.cs

using ApiProject.Handlers;
using Microsoft.AspNetCore.Authentication;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.OpenApi.Models;
using Serilog;
using System.Reflection;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

// connectionString = Configuration.GetConnectionString("DefaultConnection");
var connectionString = "data source=localhost; initial catalog=testiprojekti; integrated security=True;MultipleActiveResultSets=True;";
builder.Services.AddDbContext<ApiProject.Data.ApiProjectDbContext>(options => options.UseSqlServer(connectionString));
builder.Services.AddAuthentication("BasicAuthentication")
        .AddScheme<AuthenticationSchemeOptions, BasicAuthHandler>("BasicAuthentication", null);

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
    c.EnableAnnotations();
    c.SwaggerDoc("v1", new OpenApiInfo 
       { Title = "APIProject",
          Description = "My personal first REST-API exercise with DotNet 6.0. Content: For people and project membership management",
          Version = "v1",
        TermsOfService = new Uri("https://example.com/terms"),
        Contact = new OpenApiContact
        {
            Name = "Example Contact",
            Url = new Uri("https://example.com/contact")
        },
        License = new OpenApiLicense
        {
            Name = "Example License",
            Url = new Uri("https://example.com/license")
        },
    });
    c.AddSecurityDefinition("basic", new OpenApiSecurityScheme
    {
        Name = "Authorization",
        Type = SecuritySchemeType.Http,
        Scheme = "basic",
        In = ParameterLocation.Header,
        Description = "Basic Authorization header using the Bearer scheme."
    });
    c.AddSecurityRequirement(new OpenApiSecurityRequirement
       {
         {
             new OpenApiSecurityScheme
             {
                 Reference = new OpenApiReference
                 {
                    Type = ReferenceType.SecurityScheme,
                    Id = "basic"
                 }
             },
            new string[] {}
         }
    });
    // Set the comments path for the Swagger JSON and UI.
    /*var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
    var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
    c.IncludeXmlComments(xmlPath);*/
});

builder.Host.UseSerilog((ctx, lc) => lc
    .WriteTo.Console()
    .WriteTo.File("logs/main.log", rollingInterval: RollingInterval.Day));

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthentication();

app.UseAuthorization();

app.MapControllers();

app.Run();