@Yamakasi, this integration is not actually part of XtraDB cluster itself. The integration between etcd and PXC is accomplished using some helper scripts. So yes, these scripts probably need an update. You can follow the instructions on the PXC docker to use this without etcd in order to get your system up and running. I highly recommend that you create a issue for our dev team on this matter.
In this blog, we are going to deploy application containers on top of a load-balanced Galera Cluster on 3 Docker hosts (docker1, docker2 and docker3), connected through an overlay network as a proof of concept for MySQL clustering in multiple Docker hosts environment. We will use Docker Engine Swarm mode as the orchestration tool. 2b1af7f3a8