This GitHub Action updates a CONTRIBUTORS file with the top contributors from the specified project, pulling contents from the GitHub API. You can use it in combination with an action to push changes directly into your project's main branch, or with an action that creates a PR with the updated file.

• CONTRIB_REPOSITORY: The repository you want to pull contributors from. This is mandatory.
• CONTRIB_OUTPUT_FILE: The file you want to generate, default set to CONTRIBUTORS.md.
• CONTRIB_STENCIL_DIR: Where to find Stencil templates. Default set to .stencil.
• CONTRIB_TEMPLATE: The stencil template to use - you can use this to customize the generated markdown file. Default set to the included contributors.tpl file.
• CONTRIB_IGNORE: A comma-separated string with users to ignore. Default set to github-actions[bot],renovate-bot,dependabot.

This action is made to use in conjunction with test-room-7/action-update-file in order to automatically commit an updated CONTRIBUTORS file in a fixed interval.

The following example sets a workflow to update the file once a month, committing the changes directly to the main project's branch:

name: Update CONTRIBUTORS file
on:
  schedule:
    - cron: "0 0 1 * *"
  workflow_dispatch:
jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - uses: minicli/[email protected]
        name: "Update a projects CONTRIBUTORS file"
        env:
          CONTRIB_REPOSITORY: 'minicli/minicli'
          CONTRIB_OUTPUT_FILE: 'CONTRIBUTORS.md'
      - name: Commit changes
        uses: test-room-7/action-update-file@v1
        with:
          file-path: 'CONTRIBUTORS.md'
          commit-msg: Update Contributors
          github-token: ${{ secrets.GITHUB_TOKEN }}

You need to replace the CONTRIB_REPOSITORY value with the GitHub project you want to pull contributors from.

If you'd prefer to create a pull request instead of committing the changes directly to the main branch, you can use the create-pull-request action instead. That will require also the actions/checkout GitHub action.

name: Update CONTRIBUTORS file
on:
  schedule:
    - cron: "0 0 1 * *"
  workflow_dispatch:
jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: minicli/[email protected]
        name: "Update a projects CONTRIBUTORS file"
        env:
          CONTRIB_REPOSITORY: 'minicli/docs'
          CONTRIB_OUTPUT_FILE: 'CONTRIBUTORS.md'
      - name: Create a PR
        uses: peter-evans/create-pull-request@v3
        with:
          commit-message: Update Contributors
          title: "[automated] Update Contributors File"
          token: ${{ secrets.GITHUB_TOKEN }}

This action uses a simple templating lib that allows some customization for the final generated markdown file.

Here's how the default template looks like:

# Top Contributors: {{ repo }}
Shout out to our top contributors!

{{ content }}

_Last updated: {{ updated }}_

The app will pass on the following variables to the template, which you can use as you prefer:

• repo: the repository from where the data is coming from. Ex: minicli/minicli
• content: the full list of contributors
• updated: date and time the file was generated in RFC822 format

To use a custom template, create a .tpl file based on the default template. Then, include the following environment variables on your workflow:

• CONTRIB_STENCIL_DIR: a directory in your workflow repository where you'll have your template(s). Set this as ${{ github.workspace }}/YOUR_DIRECTORY
• CONTRIB_TEMPLATE: the name of the file, without the tpl extension. Default: contributors

This template file must be committed to the same repository where the workflow is defined.

Then, you'll also need to include the actions/checkout action to your workflow so that your repo files are available to the GitHub runner when it executes the action.

Here is an example of a workflow that uses a custom template called mytemplate.tpl, located in a .stencil directory in the repository where the workflow is set:

name: Update CONTRIBUTORS file
on:
  schedule:
    - cron: "0 0 1 * *"
  workflow_dispatch:
jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: minicli/[email protected]
        name: "Update a projects CONTRIBUTORS file"
        env:
          CONTRIB_REPOSITORY: 'minicli/minicli'
          CONTRIB_OUTPUT_FILE: 'CONTRIBUTORS.md'
          CONTRIB_STENCIL_DIR: ${{ github.workspace }}/.stencil
          CONTRIB_TEMPLATE: mytemplate
      - name: Commit changes
        uses: test-room-7/action-update-file@v1
        with:
          file-path: 'CONTRIBUTORS.md'
          commit-msg: Update Contributors
          github-token: ${{ secrets.GITHUB_TOKEN }}