fix(aurelia): directly use app container to create root view model

Author: EisenbergEffect

src/aurelia.js

@@ -82,7 +82,7 @@ export class Aurelia {
     compositionEngine = this.container.get(CompositionEngine);
     instruction.viewModel = root;
     instruction.viewSlot = new ViewSlot(this.host, true);
-    instruction.container = this.container;
+    instruction.container = instruction.childContainer = this.container;
 
     return compositionEngine.compose(instruction).then(root => {
       this.root = root;