Merge branch 'expose-mongo-transactions' of https://github.com/hahn-k…

…ev/TheCombine into expose-mongo-transactions

Backend/Startup.cs

@@ -339,7 +339,8 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IHostApp
 
             // If an admin user has been created via the command line, treat that as a single action and shut the
             // server down so the calling script knows it's been completed successfully or unsuccessfully.
-            var userRepo = app.ApplicationServices.GetService<IUserRepository>();
+            using var startupScope = app.ApplicationServices.CreateAsyncScope();
+            var userRepo = startupScope.ServiceProvider.GetService<IUserRepository>();
             if (userRepo is not null && CreateAdminUser(userRepo))
             {
                 _logger.LogInformation("Stopping application");