docker-compose example for running an etcd cluster

1. Run docker-compose up
2. Run below test to ensure keys/values are distributed watch -n 2 "set -x; curl -s http://127.0.0.1:2379/health; export RND=\$RANDOM; echo; docker exec -it etcd-1 /bin/sh -c \"etcdctl member list && etcdctl put \$RND bar && etcdctl get \$RND\" && docker exec -it etcd-2 /bin/sh -c \"etcdctl get \$RND\"" - If you see bar at the end, this means it was distributed across the cluster properly