gmgsite/themes/hugo-casper3/layouts/_default/_markup/render-image.html

{{ if .Text }}
  <figure>
    <img src="{{ .Destination | safeURL }}">
    {{ if ne .Text "Creative Commons License" }}<figcaption>{{ .Text }}</figcaption>{{ end }}
  </figure>
{{ else }}
  <img src="{{ .Destination | safeURL }}">
{{ end }}