Ratnopam Chakrabarti, a software developer at Ericsson Inc., specializes in IoT, machine-to-machine technologies, connected cars, and smart city domains, and enjoys learning and applying new technologies. He elaborates on the advantages of using Docker for containerizing applications, specifically a node app and Couchbase, to avoid installing prerequisite software locally. By using a custom Couchbase image and an automation script, Chakrabarti preconfigures a Couchbase instance with necessary services and a bucket named “photogallery,” simplifying setup and avoiding manual configuration. He details the process of building and running Docker images for both Couchbase and a photogallery app, which operates using AWS Rekognition and demonstrates the ease of running these applications without local installations. The post is part of the Couchbase Community Writing Program and references helpful resources for working with Docker and Node.js.