You would just need to run the Enterprise docker image instead of the community one. You’d also need to authenticate your EE credentials against Camunda’s own nexus to access the EE image. The rest is the same.
If you’re and enterprise customer you should create a support ticket and you’ll be able to get assistance from the consulting team.
The Enterprise edition will come with a license key and authentication to download/access the EE artifacts.
To access JIRA you would have been asked by us for a list of named support contacts who would then be given access to JIRA. Whoever in your organization was part of the process of getting a license should know this information.