We have a core Tomcat installation setup and I wanted to install Confluence so that it would leverage our existing Tomcat installation (using virtual hosting). The instructions that I found online didn't deploy Confluence correctly (using a host name with a separate conf/catalina file). This on the other hand did do the trick:
<Host name="confluence.mydomain.com" appBase="webapps" unpackWARs="false" autoDeploy="true">
<Context path="" docBase="c:/tomcat/sites/confluence-5.1.3/confluence" debug="0" reloadable="true">
</Context>
</Host>
