Dagger` is a new project introduced by the creators of Docker, aiming to revolutionize the CI/CD pipeline development experience for devops engineers. It allows them to build powerful pipelines quickly and run them anywhere, without the need for specialized tools or scripts. Dagger achieves this through its "lego system" approach, where pipelines are composed of reusable actions using an intuitive declarative language and API. This enables devops engineers to test, debug, and improve their pipelines locally, then run them on any CI system with minimal modification. By introducing a portable devkit for CI/CD pipelines, Dagger aims to unify dev and CI environments, avoid CI lock-in, and promote component reuse between pipelines, ultimately helping the devops community solve its fragmentation problem.