Here are the instructions on how to install Jira and Contour side-by-side in the same Tomcat Instance:

If you have installed Jira WAR,

1. Stop Tomcat

2. Download latest Contour

3. Unzip contour to {tomcat}/webapps

4. Start Tomcat

5. Point to http://localhost:8080/contour

If you have installed  JIRA standalone, for example, Atlassian Jira Enterprise 3.13.4 standalone,

1. Stop Tomcat

2. Download latest Contour

3. Unzip contour to {atlassian-jira-enterprise-3.13.4-standalone}

4. Add the following to {atlassian-jira-enterprise-3.13.4-standalone}/conf/server.xml file:

<Context path="/contour" docBase="${catalina.home}/contour" reloadable="false">

The Context path for JIRA can stay as root ("/")  or be changed  to "/jira".

You can take a look at the attached "server.xml"  file as an example.

5. Go to {atlassian-jira-enterprise-3.13.4-standalone}\common\endorsed,  delete the two files there (xercesImpl.jar and xml-apis.jar). They are not needed anymore since they are already part of JRE 1.5+.

6. Start Tomcat

7. Point to http://localhost:8080/contour