Developed and stabilized a pull request-based continuous integration workflow for the ARUSfs/DRIVERLESS2 repository, focusing on automated testing within a ROS Docker environment. Leveraging GitHub Actions, Docker, and Shell scripting, the work introduced automated PR validation by building and testing the workspace with colcon, ensuring reliable and reproducible results. Addressed issues with workspace paths, repository layout, and test execution reliability, which reduced flaky test runs and improved maintainability. The workflow enhancements clarified onboarding steps for contributors and standardized the CI process, resulting in faster PR validation and more consistent environments for ROS-based testing using Bash, YAML, and shell scripting.