Running on Raspberry Pi?

I've read this article which has lead me to believe that this can be done:
https://www.citusdata.com/blog/2015/03/09/citus-raspberry-pi-2/

However it's outdated and doesn't have any specific details on the setup.
When I run `docker-compose up` on my Raspberry Pi like in the examples it throws the following errors:
```
pi@raspberrypi:~/citus $ docker-compose up -d
WARNING: The Docker Engine you're using is running in swarm mode.

Compose does not use swarm mode to deploy services to multiple nodes in a swarm. All containers will be scheduled on the current node.

To deploy your application across the swarm, use `docker stack deploy`.

Starting citus_master ... done

ERROR: for manager Container "f8b7d4d7c2ce" is unhealthy.
ERROR: Encountered errors while bringing up the project.
```

Is this because the base Postgres image that the dockerfile uses is for the default x86 postgres image?