Feature images in custom RSS feed

Themes
9 
<?xml version = "1.0" encoding = "UTF-8"?>
<rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" version="2.0">
<channel>
<title><![CDATA[ {{@site.title}} ]]></title>
<description><![CDATA[ {{@site.description}} ]]></description>
<link>{{@site.url}}</link>
<language>ru</language>
<image>
    <url>{{@site.url}}/favicon.png</url>
    <title>{{@site.title}}</title>
    <link>{{@site.url}}</link>
</image>
<lastBuildDate>{{date format="ddd, DD MMM YYYY HH:mm:ss ZZ"}}</lastBuildDate>
<atom:link href="{{@site.url}}" rel="self" type="application/rss+xml"/>
<ttl>60</ttl>

{{#get "posts" limit="all" include="authors,tags"}}
    {{#foreach posts}}
    <item>
        <title><![CDATA[ {{title}} ]]></title>
        <description><![CDATA[ {{excerpt}} ]]></description>
        <link>{{url absolute="true"}}</link>
        <guid isPermaLink="false">{{id}}</guid>
        <category><![CDATA[ {{primary_tag.name}} ]]></category>
        <dc:creator><![CDATA[ {{primary_author.name}} ]]></dc:creator>
        <pubDate>{{date format="ddd, DD MMM YYYY HH:mm:ss ZZ"}}</pubDate>
        <media:content url="{{feature_image}}" medium="image"/>
        <media:description>{{feature_image_caption}}</media:description>
        <content:encoded><![CDATA[ {{content}} ]]></content:encoded>
    </item>
    {{/foreach}}
{{/get}}

</channel>
</rss>