Swagger Before Header Startup

Startup.cs

 public void ConfigureServices(IServiceCollection services)
 {
    services.AddControllers();
    services.AddSwaggerGen(options =>
     {
         options.SwaggerDoc("v1", new OpenApiInfo { Title = "My Awesome Application", Version = "v1" });
     });
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    app.UseRouting();
      
    app.UseSwagger();
    app.UseSwaggerUI(options =>
    {
       options.SwaggerEndpoint("v1/swagger.json", "My Awesome Application");
    });
    
    app.UseEndpoints(endpoints => {
                endpoints.MapControllers();
    });
}