Consolidate duplicate workflows and serve README on GitHub Pages

[Copilot]

The repository contained two workflows triggering on push to main: build.yml for Docker builds and pages.yml for React app deployment. Requirement: single workflow serving README.md on GitHub Pages instead of the React app.

Changes

Consolidated workflows

• Merged pages deployment into build.yml, deleted pages.yml
• Added workflow_dispatch trigger for manual runs
• Moved concurrency control to job level to prevent blocking Docker builds

README.md deployment

• Converts README.md to HTML using npx [email protected]
• Wraps content in GitHub-style CSS for proper rendering
• Deploys to Pages only on main branch pushes or manual dispatch

Workflow structure

jobs:
  docker:
    # Builds and pushes Docker images (unchanged)
  
  pages:
    if: (github.event_name == 'push' && github.ref == 'refs/heads/main') || github.event_name == 'workflow_dispatch'
    concurrency:
      group: "pages"
    # Converts README.md → HTML → dist/index.html
  
  deploy-pages:
    needs: pages
    # Deploys to GitHub Pages

Optimizations

• Standardized to checkout@v5
• Job-level concurrency prevents Docker/Pages blocking
• npx for marked (no global install overhead)

Original prompt

This repo contains since the last PR merge two workflows to build the pages deployment. I want to have only one workflow and the Readme.md to be served as index.html not the actual react app

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