diff --git a/index-lab.adoc b/index-lab.adoc
index b472a35..e7e64cd 100644
--- a/index-lab.adoc
+++ b/index-lab.adoc
@@ -43,6 +43,8 @@ Apostolos rootApostolos@swarmlab.io
 Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels
 ====
 
+=== http://docs.swarmlab.io/SwarmLab-HowTos/labs/Howtos/installdual/install.adoc.html[Install dual^] 
+
 
 :hardbreaks:
 
diff --git a/index-lab.adoc.html b/index-lab.adoc.html
index aac3644..d7a025c 100644
--- a/index-lab.adoc.html
+++ b/index-lab.adoc.html
@@ -452,6 +452,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <li><a href="#_prepare_your_development_and_test_environment">1. Prepare your development and test environment</a>
 <ul class="sectlevel2">
 <li><a href="#_install_docker">1.1. Install docker</a></li>
+<li><a href="#_install_dual">1.2. Install dual</a></li>
 </ul>
 </li>
 <li><a href="#_linux">2. LINUX</a>
@@ -528,6 +529,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 </tr>
 </table>
 </div>
+</div>
+<div class="sect2">
+<h3 id="_install_dual">1.2. <a href="http://docs.swarmlab.io/SwarmLab-HowTos/labs/Howtos/installdual/install.adoc.html" target="_blank" rel="noopener">Install dual</a></h3>
 <div class="paragraph">
 <p><br>
 <br>
@@ -751,7 +755,7 @@ This tutorial demonstrates some common <strong>nmap</strong> port scanning scena
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2020-10-26 11:21:26 UTC
+Last updated 2020-10-26 11:53:21 UTC
 </div>
 </div>
 </body>
diff --git a/index-lab.adoc.pdf b/index-lab.adoc.pdf
index 924bda4..538674f 100644
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 /Keywords (iot, swarm, Linux, OS, Sec)
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