Make TODO: Only run this if using a real database (#569)

use IsSqlServer extension method on catalogContext.Database (DatabaseFacade)

src/Infrastructure/Data/CatalogContextSeed.cs

@@ -15,8 +15,11 @@ namespace Microsoft.eShopWeb.Infrastructure.Data
             int retryForAvailability = retry.Value;
             try
             {
-                // TODO: Only run this if using a real database
-                // catalogContext.Database.Migrate();
+                if (catalogContext.Database.IsSqlServer())
+                {
+                    catalogContext.Database.Migrate();
+                }
+
                 if (!await catalogContext.CatalogBrands.AnyAsync())
                 {
                     await catalogContext.CatalogBrands.AddRangeAsync(