Using LocalFileOfflineCache implementation

Program.cs

public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder => {
                    webBuilder.UseStartup<Startup>();
                })
                .ConfigureAppConfiguration((context, config) => {
                    var settings = config.Build();
                    var appConfigEndpoint = settings["AppSettings:AppConfiguration:Endpoint"];

                    if (!string.IsNullOrEmpty(appConfigEndpoint))
                    {
                        var endpoint = new Uri(appConfigEndpoint);

                        config.AddAzureAppConfiguration(options =>
                        {
                            ...
                            
                            options
                                // Use the custom IOfflineCache implementation
                                .SetOfflineCache(new LocalFileOfflineCache(context.HostingEnvironment));
                        });
                    }

                });