Follow up f66ab5c6304ad35b4976a6c55c695db0984e06e1 - Fixes #5399 - zammad:package:bundle_install idea does not work out.

app/assets/javascripts/app/views/package.jst.eco

@@ -12,7 +12,12 @@
     <%- @T('After installing, updating, or uninstalling packages the following commands need to be executed on the server:') %>
     <ul>
     <% if @package_installation: %>
-      <li><code>root> /opt/zammad/contrib/packager.io/postinstall.sh</code></li>
+    <% if @local_gemfiles: %>
+      <li><code>root> zammad config:set BUNDLE_DEPLOYMENT=0</code></li>
+      <li><code>root> zammad run bundle config set --local deployment 'false'</code></li>
+      <li><code>root> zammad run bundle install</code></li>
+    <% end %>
+      <li><code>root> zammad run rake zammad:package:post_install</code></li>
     <% else: %>
       <% if @local_gemfiles: %>
       <li><code>zammad> bundle install</code></li>