jBPM is packaged as several web application so they are fairly easy to deploy on any application servers. Here is a brief list of elements that could differ per application server/container:
- data source configuration as jBPM jpa uses JNDI look up for data sources by default
- persistence configuration - persistence.xml
- user/roles configuration for console
I think a good start would be to first search this forum, I am quite sure someone has already done that. Next look through jbpm console war (jbpm-gwt-console-server.war) to get yourself bit familiar with internals. A good kind of documentation can be build.xml file from jbpm installer as it packages everything before deployment.
And of course you're welcome to post further questions here as well.
HTH