packer-cn/website/source/layouts/guides.erb

<% wrap_layout :inner do %>
  <% content_for :sidebar do %>
    <ul class="nav docs-sidenav">
      <li<%= sidebar_current("guides-veewee-to-packer") %>>
        <a href="/guides/veewee-to-packer.html">Veewee to Packer</a>
      </li>
      <li<%= sidebar_current("guides-packer-on-cicd") %>>
        <a href="/guides/packer-on-cicd/index.html">Build Immutable Infrastructure with Packer in CI/CD</a>
        <ul class="nav">
          <li<%= sidebar_current("guides-packer-on-cicd-build-image") %>>
            <a href="/guides/packer-on-cicd/build-image-in-cicd.html">Build Images in CI/CD</a>
          </li>
          <li<%= sidebar_current("guides-packer-on-cicd-build-virtualbox") %>>
            <a href="/guides/packer-on-cicd/build-virtualbox-image.html">Build a VirtualBox Image with Packer in TeamCity</a>
          </li>
          <li<%= sidebar_current("guides-packer-on-cicd-upload-image-to-artifact-store") %>>
            <a href="/guides/packer-on-cicd/upload-images-to-artifact.html">Upload a VirtualBox Image to S3</a>
          </li>
          <li<%= sidebar_current("guides-packer-on-cicd-trigger-tfe-run") %>>
            <a href="/guides/packer-on-cicd/trigger-tfe.html">Trigger Terraform Enterprise runs</a>
          </li>
        </li>
      </li>
    </ul>
  <% end %>

  <%= yield %>
<% end %>