enable hosting the website also on other domains (#355)

Jan Steinke

14.29.2021 e3f7fbe39d7b24d43e80a3c95aa3d940731ac535

 layouts/post/summary-with-image.html

@@ -1,5 +1,5 @@
<article class="bb b--black-10">
  <a class="db pv4 ph3 ph0-l no-underline dark-gray dim" href="{{ .Permalink }}">
  <a class="db pv4 ph3 ph0-l no-underline dark-gray dim" href="{{ .RelPermalink }}">
    <div class="flex flex-column flex-row-ns">
      {{ $featured_image := partial "func/GetFeaturedImage.html" . }}
      {{ if $featured_image }}