Confluence 7.0.1 Docker build does not on a multi node environment

Issue summary

1. While the Confluence Docker image does not seem to be officially supported as of yet (see CONFSERVER-55369), we do do have notes on our official page on how to set it up for Data Center.
   • https://hub.docker.com/r/atlassian/confluence-server
2. The latest build however seems to be hitting into the same issue below, where the nodes advertise their private networks to each other and thus refuse to let them join the cluster.
   • BSERV-10837

Workaround

At present the best workaround is to setup a docker-overlay network
https://docs.docker.com/network/overlay/

Suggested Solution

Hazelcast has a solution to this by way of the configuration property
hazelcast.local.publicAddress but it is not exposed. Exposing this property should solve this problem.