Question

Your team maintains a deploy workflow that should ONLY be runnable manually from the GitHub Actions UI, and never triggered automatically by pushes or pull requests. A developer selects the 'staging' branch in the 'Run workflow' dropdown and triggers the run. Which statement correctly describes how the trigger and branch selection behave?

Accepted Answer

Use 'on: workflow_dispatch'; the workflow version and code that run come from the branch selected in the dropdown, and github.ref points to that branch.

Answer

Use 'on: workflow_dispatch'; the dropdown only sets an input value, but the workflow always runs the version of the file from the default branch.

Answer

Use 'on: push' with a manual approval gate, since workflow_dispatch cannot restrict runs to manual invocation only.

Answer

Use 'on: workflow_dispatch' with a 'branches:' filter listing 'staging', otherwise the branch cannot be selected in the dropdown.