I wanted to reprise a demo I did at RubyConf 2015 where I used a distributed system to do sentiment analysis based on emoji. At the time I felt I had used some of the hottest technologies. I used Docker containers for each of the different pieces of the pipeline and then used Kubernetes to orchestrate the whole thing. It seemed like a logical way to deploy something that I hoped I would spin up and down on a regular basis as the need for a Kubernetes demo arose. Last week I dug into the code to try and get the demo running again after a 12-month hiatus. It is amazing what you forget during that time. I am sharing some of what I learned in this blog post so that hopefully someone else doesn't have to have the same battle I did.