post-github-comment posts content read from stdin as a GitHub comment.

post-github-comment does not import any dependencies, as such, it runs easily in CI/CD systems using a node docker image.

The following environment variables are required:

• GITHUB_OWNER
• GITHUB_REPO
• GITHUB_PULL_NUMBER
• GITHUB_TOKEN

For more info, please refer to GitHub's documentation.

The following snippet shows how post-github-comment can be used to post the contents of a previously generated file called diff.yaml in Google Cloud Build pull request checks.

  - name: "node:lts-slim"
    id: "post-github-comment"
    entrypoint: "bash"
    args:
      - "-c"
      - |
        cat \
          <(echo Contents of diff:) \
          <(echo \`\`\`diff) \
          diff.yaml \
          <(echo \`\`\`) |
          ./post-github-comment.js