This action adds to Pull Request descriptions using markdown. It checks if the message is already present before adding.

add_markdown: The message to add to pull requests

github_token: Usually ${{ secrets.GITHUB_TOKEN }}, but a personal access token can also be used

Create or modify a GitHub workflow, like below. E.g. ./github/workflows/pr-append.yml

name: "Add to Pull Request Description"
on:
  pull_request: [opened]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: DerekRoberts/action-pr-description-add@v0.0.1
        with:
          add_markdown: |
            ---
            # Things!
            ## Excitement!
            [Links!](https://gov.bc.ca)
            `Markdown!`
          github_token: ${{ secrets.GITHUB_TOKEN }}

This Action is provided courtesty of the Forestry Suite of Applications, part of the Government of British Columbia.