Deploy the Hoppscotch tool, a beautifal API request builder that's an alternative to Postman/Rester.
Learn how to import/export from RESTer plugin.
Create and publish documentation for your API, using swagger and docker. This is the kind of documentation developers who use your API will actually want.
Use swagger codegen to generate your code.
Install the postman app on Ubuntu 18.04
Install Swagger 2.0 on Ubuntu 14.04.