Now that you have a git repository that includes a Dockerfile, you have tested it, and are satisfied that your tool works in Docker, the next step is to create a CWL tool definition file. This YAML (Or JSON) file describes the inputs, outputs, and Docker image dependencies for your tool.
This is a companion discussion topic for the original entry at https://docs.dockstore.org/docs/prereqs/getting-started-with-cwl/