portainer/app/timeout.ejs

<!DOCTYPE html>
<html lang="en" ng-app="<%= name %>" ng-strict-di>
  <head>
    <meta charset="utf-8" />
    <title>Portainer</title>
    <meta name="description" content="" />
    <meta name="author" content="<%= author %>" />
    <base id="base" />

    <!-- Fav and touch icons -->
    <link rel="apple-touch-icon" sizes="180x180" href="<%=require('./assets/ico/apple-touch-icon.png')%>" />
    <link rel="icon" type="image/png" sizes="32x32" href="<%=require('./assets/ico/favicon-32x32.png')%>" />
    <link rel="icon" type="image/png" sizes="16x16" href="<%=require('./assets/ico/favicon-16x16.png')%>" />
    <link rel="mask-icon" href="<%=require('./assets/ico/safari-pinned-tab.svg')%>" color="#5bbad5" />
    <link rel="shortcut icon" href="<%=require('./assets/ico/favicon.ico')%>" />
    <meta name="msapplication-config" content="<%=require('./assets/ico/browserconfig.xml')%>" />
    <meta name="theme-color" content="#ffffff" />
  </head>

  <body>
    <div class="page-wrapper">
      <!-- timeout info box -->
      <div class="container simple-box">
        <div class="col-md-8 col-md-offset-2 col-sm-10 col-sm-offset-1">
          <!-- simple box logo -->
          <div class="row">
            <img ng-if="logo" ng-src="{{ logo }}" class="simple-box-logo" />
            <img ng-if="!logo" src="<%= require('./assets/images/logo_alt.svg') %>" class="simple-box-logo" alt="Portainer" />
          </div>

          <div class="panel panel-default">
            <div class="panel-body">
              <div>
                <span class="form-section-title">New Portainer installation</span>
              </div>

              <!-- init admin init timeout notification -->
              <div class="padding-top">
                <span class="small text-muted">
                  Your Portainer instance timed out for security purposes. To re-enable your Portainer instance, you will need to restart Portainer.
                </span>
                <br /><br />
                <span class="text-muted small">
                  For further information, view our <a class="hyperlink" href="https://documentation.portainer.io/r/ce-restart-portainer" target="_blank">documentation</a>.
                </span>
              </div>
              <!-- !init admin init timeout notification -->
            </div>
          </div>
        </div>
      </div>

      <!-- !timeout info box -->
    </div>
  </body>
</html>