GitHub Actions Self Hosted Runner (Autoscaling with Kubernetes)

There are two types of runners available to you with GitHub Actions.
GitHub-hosted runners are virtual machines hosted by GitHub with the GitHub Actions runner application installed. They come with a free tier; if you reach a limit, you will pay a per-minute rate for each runner. Also, GitHub provides you with options to host your own runners wherever you want. It may be on-premise, cloud, or even Kubernetes containers. They are free to use with GitHub Actions, but you are responsible for the cost of maintaining your infrastructure.