Allow uploading images

src/app/recipes/recipes.component.html

@@ -26,7 +26,7 @@
       <ng-container matColumnDef="image">
         <th mat-header-cell *matHeaderCellDef> image </th>
         <td mat-cell *matCellDef="let element">
-          <img src="https://placehold.co/200x200">
+          <img [src]="element.image || 'https://placehold.co/200x200'" [alt]="element.image ? element.name : ''" width="200" height="200">
         </td>
       </ng-container>