With our Percona Server for MongoDB 3.2 release, we made RocksDB a first-class citizen. With this newly available engine, we want to make it easy for everybody interested to try it. With that in mind, it is now available in docker images from https://hub.docker.com/r/percona/percona-server-mongodb/.
If you have docker running, starting RocksDB is very easy:
You should see this as part of the output:
Give it a try, and let us know how RocksDB works for you!