How to Enable Automatic Updates for Diagram-Design: A Complete Guide

Enable automatic updates for diagram-design by ensuring the GitHub Actions workflow in .github/workflows/pages.yml is active and pushing changes to the main branch; optionally add Dependabot for dependency updates.

The diagram-design repository by cathrynlavery provides a ready-made automation pipeline that rebuilds and deploys your diagram gallery whenever you make changes. This article explains exactly how this system works and how to activate it for your own fork or clone.

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How Automatic Updates Work in Diagram-Design

The repository uses GitHub Actions to handle continuous deployment. The workflow file at .github/workflows/pages.yml defines two triggers:

1. Push events to the main branch — automatically rebuilds on every commit
2. Manual trigger via workflow_dispatch — allows on-demand rebuilds through the GitHub UI

When triggered, the workflow regenerates static assets from the source files in skills/diagram-design/assets/ and publishes them to GitHub Pages.

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Step 1: Verify Repository Access and Workflow Status

Before automatic updates can function, you need write access to a repository where the workflow can run.

• Fork the repository to your own GitHub account, or
• Clone and push to a repository where you have admin permissions

Open .github/workflows/pages.yml to confirm the workflow exists:

# .github/workflows/pages.yml – triggers defined here

on:
  push:
    branches: [ main ]
  workflow_dispatch:   # enables manual "Run workflow" button

The push trigger on main is the key mechanism that enables automatic updates for diagram-design.

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Step 2: Trigger an Automatic Update

Any commit to main initiates the rebuild process. Edit any diagram source file under skills/diagram-design/ or even a documentation file:

git checkout main
echo "<!-- triggering rebuild -->" >> README.md
git add README.md
git commit -m "Trigger auto-update of gallery"
git push origin main

The workflow will appear in your repository's Actions tab within seconds, showing the build and deployment progress.

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Step 3: Verify Deployment on GitHub Pages

Once the workflow completes successfully, your updated gallery is live at:

https://<your-username>.github.io/diagram-design/

The static assets generated in skills/diagram-design/assets/ are now serving the latest version of your diagrams.

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Optional: Enable Dependency Updates with Dependabot

For dependency-level automatic updates (keeping tools like Playwright or Mermaid current), add a Dependabot configuration:

# .github/dependabot.yml

version: 2
updates:
  - package-ecosystem: "npm"
    directory: "/"
    schedule:
      interval: "weekly"

Commit this file to main and Dependabot will automatically open pull requests when new versions of your dependencies become available.

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Key Files Controlling Automatic Updates

File	Purpose
.github/workflows/pages.yml	Defines the CI/CD pipeline that enables automatic updates for diagram-design
skills/diagram-design/assets/	Destination for generated HTML/SVG files served by GitHub Pages
README.md	Safe file to edit for triggering test deployments

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Manual Rebuild Without Code Changes

If you need to force a rebuild without modifying source files, use GitHub's interface:

1. Navigate to Actions → Pages workflow
2. Click Run workflow → select main branch → Run

This executes the same deployment pipeline without requiring a commit.

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Summary

• Automatic updates rely on the pre-configured GitHub Actions workflow at .github/workflows/pages.yml
• Push any change to main to trigger a full rebuild and deployment cycle
• GitHub Pages hosts the output from skills/diagram-design/assets/ automatically
• Dependabot provides optional automatic updates for build dependencies
• Manual triggers via workflow_dispatch allow deployment on demand

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Frequently Asked Questions

What triggers automatic updates in diagram-design?

Any push to the main branch triggers the workflow defined in .github/workflows/pages.yml. This includes commits that modify diagram sources, documentation, or even just a whitespace change.

Can I enable automatic updates on a branch other than main?

You can modify the workflow's on.push.branches array in .github/workflows/pages.yml to watch additional branches, but GitHub Pages typically deploys from one designated branch only.

Does diagram-design support scheduled automatic updates?

The repository does not include schedule triggers by default. You can add a schedule event to the workflow's on section if you need periodic rebuilds regardless of code changes.

How do I check if automatic updates are working correctly?

Push a visible change (like editing README.md), then monitor the Actions tab for a green checkmark. The updated content should appear at your GitHub Pages URL within 1-2 minutes of workflow completion.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}