What is the recommended image size for GitLab Security Scanner jobs?

The recommended image size for GitLab Security Scanner jobs being 50MB or smaller is based on performance and efficiency considerations. Keeping image sizes small helps reduce the time it takes to pull images from the container registry, which can dramatically impact the speed of CI/CD pipelines. Smaller images typically lead to faster build times, quicker tests, and more efficient resource use.

In GitLab CI/CD environments, using lightweight images can also improve overall performance and make it easier to maintain and distribute these images. Additionally, smaller images can contribute to more reliable scanning processes, as they reduce the likelihood of timeouts and other issues associated with larger images during the scanning phase.

While larger image sizes may still function, they can lead to slower pipeline execution and potentially increased costs in terms of resource usage. Therefore, maintaining an image size of 50MB or smaller is a best practice in enhancing CI/CD efficiency and reducing operational hurdles when running GitLab Security Scanners.