Example workflow used in this article: https://medium.com/@merlin.pav/122c653c0b09?source=friends_link&sk=4ca7d4ab89ce41f2118a1d9aad50807d

github_article_sample_cd_workflow__action.yaml

name: 'Validate tags'
author: 'Hugobert Humperdinck'
description: 'Validate release/pre-release tags'
inputs:
  prerelease:
    description: 'Tag is prerelease'
    required: true
runs:
  using: 'docker'
  image: 'Dockerfile'
  args:
    - ${{ inputs.prerelease }}