This action met a very simple need I had that nothing else seemed to do: it generates a tag for commits on a branch where the tagname is composed of a base version and a timestamp.

Nothing fancy. Just a way to tag commits to, for example, a development branch so a build can be produced for each merge.

• base_version - The root text to use when creating the tag; i.e., v0.5.0

• tag_name - The generated tag; i.e., v0.5.0-20191204081223
• tag_hash - The commit hash for the tag.
• tag_time - The timstamp from the tag; i.e., 20191204081223

Add a workflow file like the following to your project:

name: "Tag commits on develop"

on:
  push:
    branches:
      - develop

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Apply a tag to the new commit
      id: create_tag
      uses: mcpierce/github-commit-timestamp-tagger@master
      with:
        repo-token: "${{ secrets.GITHUB_TOKEN }}"
        base_version: "v0.5.0"
    - name: Use the tag in another step
      run: echo ${{ steps.create_tag.outputs.tag_name }}