Fix srcsets overriding rewritten image srcs

lib/frenzy/pipeline/scrape_stage.ex

@@ -158,6 +158,16 @@ defmodule Frenzy.Pipeline.ScrapeStage do
               attr
           end)
 
+        has_src = Enum.find(new_attrs, fn {name, _} -> name == "src" end)
+
+        # remove srcsets because our transformation only applies to the src attribute, so that should always be used
+        new_attrs =
+          if has_src do
+            Enum.reject(new_attrs, fn {name, _} -> name == "srcset" end)
+          else
+            new_attrs
+          end
+
         {"img", new_attrs}
 
       elem ->
@@ -191,5 +201,5 @@ defmodule Frenzy.Pipeline.ScrapeStage do
     end
   end
 
-  defp image_to_data_uri(src, _site_uri, false), do: src
+  defp image_to_data_uri(src, site_uri, false), do: to_string(URI.merge(site_uri, src))
 end