themes/docsy/layouts/partials/featured-image.html

{{ $w := .w | default 480 }}
{{ $h := .h | default 180 }}
{{ $p := .p }}
{{ $class := .class | default "ml-3" }}
{{ $image := ($p.Resources.ByType "image").GetMatch "**featured*" }}
{{ with $image }}
{{ $image := .Fill (printf "%dx%d" $w $h ) }}
<figure class="{{ $class }}" style="width: {{ $image.Width }}px">
<img src="{{ $image.RelPermalink }}" alt="Featured Image for {{ $p.Title }}" width="{{ $image.Width }}" height="{{ $image.Height }}">
{{ with $image.Params.byline }}
 <figcaption class="mt-2 mt-md-0"><small class="text-muted">{{ . | html }}</small></figcaption>
{{ end }}
</figure>
{{ end }}