bobatheme/layouts/shortcodes/figure.html

<figure>

    {{ $img := $.Page.Resources.GetMatch (.Get "resrc") | resources.Fingerprint "sha512" }}

    {{ if .Get "href" }}<a href="{{ .Get "href" }}">{{ end }}
        <img src="{{ $img.Permalink }}"
             {{ if or (.Get "alt") (.Get "caption") }}
             alt="{{ with .Get "alt" -}}
                  {{ . -}}
                  {{ else -}}
                  {{ .Get "caption" | markdownify -}}
                  {{ end -}}"
             {{ end }}

             {{ with .Get "width" }} width="{{ . }}" {{ end }}
             {{ with .Get "height" }} height="{{ . }}" {{ end }}
        />
    {{ if .Get "href" }}</a>{{ end }}

    {{ with .Get "caption" }}
    <figcaption>
        {{ . | markdownify }}
    </figcaption>
    {{ end }}

</figure>