Using Swashbuckle with NetCORE to get standard OpenAPI

Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Swashbuckle.AspNetCore.Swagger;

namespace ElGuerre.Taskin.Api
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

            // Add bellow statement to use HTTPS o a better option, set environment varibble ASPNETCORE_HTTPS_PORT 
            //  services.AddHttpsRedirection(options => options.HttpsPort = 5003);

            // Add Swagger
            services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1",
                    new Info
                    {
                        Version = "v1",
                        Title = "Taskin API",
                        Description = "API to expose Taskin logic",
                        TermsOfService = "https://github.com/juanluelguerre/Taskin/blob/master/LICENSE"
                    }
                );
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseMvc();

            app.UseSwagger()
                .UseSwaggerUI(c =>
                {
                    c.SwaggerEndpoint("/swagger/v1/swagger.json", "Taskin V1");
                });
                    }
                }
}