GitHub allows to use self-hosted runners for CI/CD.
It is recommended not to use a self-hosted runner on public repositories as forks can run unauthorized code on the machine.
A self-hosted runner needs to be labeled according to the workflow files so it can pick up the jobs. For example, if a workflow is:
jobs:
deploy:
runs-on:
- self-hosted
- production
The runner needs to be labeled with self-hosted and production labels.