Worked on the tramlinehq/tramline repository to deliver a reproducible, container-based test automation environment for Ruby on Rails projects. Developed a Dockerized workflow for RSpec, allowing tests to run consistently across local development, Docker containers, and CI pipelines. Enhanced the Justfile to support conditional test execution either locally or within containers, improving flexibility for developers. Introduced a dedicated 'spec' service in docker-compose.yml to isolate and orchestrate test runs, and configured the test database to connect seamlessly with a Dockerized PostgreSQL instance. Utilized Ruby, Shell, and YAML to ensure environment parity and streamline the testing process across all development stages.