update profile image

config.toml

@@ -11,7 +11,7 @@ style = "emacs"
   blog = "/blog/:year/:slug"
 
 [params]
-  avatar = "profile.jpg"
+  avatar = "profile.png"
   author = "Max Mehl"
   description = "Open Source expert with background in tech and policy. Focused on strategy, governance, and software supply chains. Building sustainable digital environments."
   keywords = "open source, free software, Deutsche Bahn, DB Systel, FSFE, management, campaign, communication, strategy, konstanz, berlin, munster, IT service, politics, administration, scouts, founder"

themes/hugo-sustain/layouts/partials/head.html

@@ -12,7 +12,7 @@
           {{- $title = print .Site.Title " | " .Title -}}
         {{- end -}}
     {{- end -}}
-    {{- $image := "/img/profile.jpg" -}}
+    {{- $image := path.Join "/img" .Site.Params.avatar -}}
     {{- if isset .Params "headerimage" }} {{ $image = print "img/" .Params.headerimage }} {{ end -}}
     <meta charset="utf-8" />
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />