code: public EmbeddedTomcat setContextFile(String contextFile) {
  		try {
  			this.contextFileURL = new File(contextFile).toURI().toURL();
  		}
  		catch (MalformedURLException e) {
  			throw new RuntimeException(e);
  		}
  		return this;
  	}
docs: Sets the location of the context file that configures this web application
  
  @param contextFile Location of the context file
  @return The embedded Tomcat instance