Last December, I was invited to a private bug bounty program to test a beta version of GitHub Actions. GitHub Actions is a workflow automation tool integrated with GitHub. One common use case of GitHub Actions is for CI builds – a project can fairly easily start up a Docker container every time they push a commit (e.g.), and run their project’s tests in the container. At the time, I wasn’t too familiar with the details of how GitHub Actions worked, so I decided to just try it out and see what wo...