Add an image, where the src is evaluated by AngularJS:
Definition and Usage
ng-src directive overrides the original src attribute of
an <img> element.
ng-src directive should be used instead of
if you have AngularJS code inside the src value.
ng-src directive makes sure the image is not displayed wrong before AngularJS has evaluated the code.
Supported by the <img> element.
|string||A string value, or an expression resulting in a string.|