Creating a custom GitHub Action using Go

In this section, we will extend upon our work by turning the tweeter command line into a GitHub Action. This will allow anyone on GitHub building automation to use tweeter to tweet from their own pipeline. Furthermore, we'll use our tweeter action to tweet when we release new versions of tweeter by extending the release job to use our new action.

In this section, you will learn the basics of authoring GitHub Actions. You will create a custom GitHub Action using Go. You will then optimize the start up time of your custom action by creating a container image.

Basics of custom actions

Custom actions are individual tasks that wrap a collection of related tasks. Custom actions can be executed as individual tasks in workflows and can be shared with the GitHub community.

Types of actions

There are three types of actions: container, JavaScript, and composite actions. Container-based actions use a Dockerfile or a container image...