In the Tomcat conf\Catalina\localhost directory, add a context file named mapserver2015.xml with the following content:
<!--
Context configuration file for the Tomcat Manager Web App
-->
<Context
docBase=
"C:\Program Files\Autodesk\Autodesk Infrastructure Web Server Extensions 2015\www"
privileged="true" antiResourceLocking="false" antiJARLocking="false">
<!-- Link to the user database we will get roles from -->
<ResourceLink name="users" global="UserDatabase"
type="org.apache.catalina.UserDatabase"/>
</Context>
To start Tomcat, execute
startup.bat
in the Tomcat bin directory.