tomcat introduction

<tomcat-users>
<!--
  NOTE:  By default, no user is included in the "manager-gui" role required
  to operate the "/manager/html" web application.  If you wish to use this app,
  you must define such a user - the username and password are arbitrary. It is
  strongly recommended that you do NOT use one of the users in the commented out
  section below since they are intended for use with the examples web
  application.
-->

<role rolename="manager-gui"/>
<role rolename="manager-script"/>
<user username="tomcat" password="123456" roles="manager-gui,manager-script"/>

</tomcat-users>