In previous versions of Power BI, on installing a Content Pack, dashboard, reports and datasets would be installed in the My Workspace area of the Power BI service:
With Power BI Apps, the evolution of Content Packs, these assets are now bundled within the App.
Below is an example of an App installed – you can see the user has no Dashboard, Reports and Datasets under My Workspace when the app is selected. The user can click on View Related:
To show the related Reports and Datasets: