GitHub Actions
GitHub Actions are defined by workflows. Workflows are specified in:
.github/workflows/mWorkflow.yml
Workflow have jobs. Jobs that have steps. Steps can use custom or community actions.
See this to see community actions or this to see a custom action.
Secrets
Secrets can be set in the repository by going to GitHub > Settings > Secrets.
For example, to add debug output, we can set:
ACTIONS_STEP_DEBUG=true