Support host og images

_config.yml

@@ -2,3 +2,9 @@ collections:
   redirects:
     output: true
     permalink: /:path/
+
+include:
+  - images
+
+keep_files:
+  - images

_layouts/redirect.html

@@ -15,7 +15,13 @@
   <meta name="author" content="SITCON">
   <meta property="og:title" content="{{ page.title }}">
   <meta property="og:description" content="{{ page.description }}">
-  <meta property="og:image" content="{{ page.image }}">
+  {% if page.image %}
+    {% if page.image contains "://" %}
+      <meta property="og:image" content="{{ page.image }}">
+    {% else %}
+      <meta property="og:image" content="{{ site.url }}{{ page.image | relative_url }}">
+    {% endif %}
+  {% endif %}
   <meta property="og:site_name" content="SITCON">
   <meta property="og:locale" content="zh_TW">
   <script>

_redirects/template-with-img.md

@@ -0,0 +1,7 @@
+---
+layout: redirect
+title: "自定義標題"
+description: "自定義描述"
+image: "/images/withname.png"
+redirect_to: "https://sitcon.org/"
+---