Deploying application in Docker container

We have already covered how to use Tomcat with Docker containers in Chapter 5 , Installing and Configuring Docker. To deploy an application with the Deploy plugin of Jenkins, we will modify tomcat-users.xml. Let's take it step by step:

1. Change rolename to manager-script in tomcat-users.xml:

   <?xml version='1.0' encoding='utf-8'?> 
   <tomcat-users xmlns="http://tomcat.apache.org/xml" 
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
   xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd" 
                 version="1.0"> 
   <!-- 
     NOTE:  The sample user and role entries below are intended for use with the 
     examples web application. They are wrapped in a comment and thus are ignored 
     when reading this file. If you wish to configure these users for use with the 
     examples web application, do not forget to remove the <!....> that surrounds 
     them. You will also need...