What a difference a year makes. Last year Paypal presented on scaling a CI infrastructure with Docker, Mesos and Jenkins. Over the past year we worked on integrating Docker to the core of our PaaS ecosystem. We are Dockerizing the entire PayPal application ecosystem consisting of polyglot Java, Node.js, Scala, C++ and Python frameworks. In this journey we have introduced HA Docker Registry with ElasticSearch search plugin using both OpenStack Swift and Cinder storage, cross-data center ATS server smart image caching along with a developer-friendly boot2docker fig/compose workflow for Kraken (open source nodeJS) stack. This we believe has the potential to become one of the largest financial services production deployment of Docker.