Update README with Docker Hub and code samples links; enhance integration test initialization with delay

Author: NelsonBN

README.md

@@ -7,4 +7,6 @@
 
 
 ### References
+- [Docker Hub](https://hub.docker.com/r/microsoft/azure-messaging-servicebus-emulator)
 - [Official Documentation](https://learn.microsoft.com/en-us/azure/service-bus-messaging/test-locally-with-service-bus-emulator?tabs=automated-script)
+- [Code Samples](https://github.com/Azure/azure-service-bus-emulator-installer/tree/main/Sample-Code-Snippets/NET/ServiceBus.Emulator.Console.Sample)

tests/Demo.Tests/Config/IntegrationTestsFactory.cs

@@ -63,11 +63,15 @@ public IntegrationTestsFactory()
     public string GetServiceBusConnectionString()
         => $"Endpoint=sb://{_serviceBusContainer.Hostname}:{_serviceBusContainer.GetMappedPublicPort(SERVICE_BUS_PORT)};SharedAccessKeyName=RootManageSharedAccessKey;SharedAccessKey=SAS_KEY_VALUE;UseDevelopmentEmulator=true;";
 
-    public Task InitializeAsync()
-        => Task.WhenAll(
+    public async Task InitializeAsync()
+    {
+        await Task.WhenAll(
             _azureSqlEdgeContainer.StartAsync(),
             _serviceBusContainer.StartAsync());
 
+        await Task.Delay(TimeSpan.FromSeconds(2));
+    }
+
     public Task DisposeAsync()
         => Task.WhenAll(
             _azureSqlEdgeContainer.StopAsync(),