I have a content type with an image field that can contain an unlimited number of images. The field is used to display an image gallery in the full node view, but I also want to use the first image of the field in the teaser.
I vaguely remember doing something like this years ago in Drupal 6, but now I can't find any option to do this in Drupal 8. I'm not sure if I'm misremembering, or just looking in the wrong place.
How can I display only the first image of an image field in the teaser?