Using ant target to run/debug

Hi there!
I'm moving one project into Idea, there is ant target that is used to run the project.
How can I use only this target without configuring Tomcat manually (Everything is done in ant build file)? The problem is I can't find Tomcat installation in provided environment, that is usable by Idea. I don't understand where they have hided Tomcat but it actually works. And now I need to run that in Idea to do some debugging.

The ant build target looks like this:

                
        
          
            
            
                        
         
       
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