Accounts.Web.Startup.Startup C# (CSharp) Метод

        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .AddJsonFile("config.json")
                .AddJsonFile($"config.{env.EnvironmentName}.json", optional: true)
                .AddEnvironmentVariables();

            Configuration = builder.Build();
        }