During March 2026, this developer contributed to the tier4/scenario_simulator_v2 repository by delivering a multi-architecture Docker CI runtime stage tailored for headless simulations. The solution involved updating the CI/CD workflow to build and publish a dedicated runtime image, humble-<version>-runtime, which omits desktop components such as rviz. This approach enables simulations to run efficiently on storage-constrained devices by reducing unnecessary dependencies. The work was implemented using YAML for CI configuration and leveraged Docker and DevOps practices to streamline deployment. No major bugs were reported during this period, reflecting a focused and well-executed feature delivery within the project’s requirements.