semver-pre-release

Enforce the ref for a pre-release. The git ref:

• MUST be a SemVer version
• MUST have a pre-release version

Using

name: Pre-Release

on:
  release:
    types: [prereleased]

jobs:
  publish_pre_release:
    runs-on: ubuntu-latest
    name: NAME
    steps:
      - name: Enforce SemVer for pre-release
        id: enforce_semver
        uses: NetChris/semver-pre-release@SHA
      - name: Use the SemVer version
        run: echo Do something with semver_version: ${{ steps.enforce_semver.outputs.semver_version }}

Use the latest (or most-appropriate) SHA to ensure consistent results.

Notes

Although not a concern of this action, it's important to point out an issue with the prereleased release type. From the GitHub documentation, there is an issue releasing a draft pre-release:

Note: The prereleased type will not trigger for pre-releases published from draft releases, but the published type will trigger. If you want a workflow to run when stable and pre-releases publish, subscribe to published instead of released and prereleased.