update preview image

app/javascript/application.js

@@ -35,8 +35,6 @@ import IndeterminateCheckbox from './elements/indeterminate_checkbox'
 
 import * as TurboInstantClick from './lib/turbo_instant_click'
 
-import './images/preview.png'
-
 TurboInstantClick.start()
 
 document.addEventListener('turbo:before-cache', () => {

app/views/shared/_meta.html.erb

@@ -13,10 +13,10 @@
   <meta property="og:image" content="">
   <meta name="twitter:image" content="">
 <% else %>
-  <meta property="og:image" content="<%= image_pack_url('images/preview.png') %>">
+  <meta property="og:image" content="/preview.png">
   <meta property="og:image:width" content="800">
   <meta property="og:image:height" content="800">
-  <meta name="twitter:image" content="<%= image_pack_url('images/preview.png') %>">
+  <meta name="twitter:image" content="/preview.png">
 <% end %>
 <meta name="twitter:card" content="summary">
 <meta name="twitter:creator" content="@docusealco">