Codefresh, a continuous delivery and collaboration platform for Docker, has introduced support for YAML files, allowing users to further customize their build, test, and deploy pipelines beyond the existing capabilities in the pipeline view. Previously, users could configure their pipelines to execute a series of tasks such as unit testing, Docker image building, and integration testing on each commit, with the ability to run each step as a standalone image or part of a composition. With the addition of YAML support, users can now define an unlimited number of steps in a codefresh.yml file, adding custom composition/environment variables, external services, networks, keys, and frameworks to their pipelines. This feature enables the automatic deployment of successful builds to staging or production environments and enhances testing capabilities using frameworks like Blazemeter and Selenium. The codefresh.yml file must be saved in the root directory of the repository, and users need to activate the YAML build option in the pipeline settings to utilize this feature.