Runs github actions triggered from external workflows
Primarily, this is used to run private build actions for free, by using a public repo rather than private. The code can be held in a private repo (which is limited to 3000 minutes), but the action can run in a public repo, where there is no limit of action minutes
Use a repository_dispatch trigger to receive incoming requests.
For external repositories wishing to generate triggers, it is recommended to use the mvasigh/dispatch-action action. Sending applications will also need a Personal Access Token with rights to run workflow actions in this repo