Update jekyll-github-pages.yml

add rmagick

Author: calvinballing

.github/workflows/jekyll-github-pages.yml

@@ -1,17 +1,14 @@
 name: Build and Deploy a Jekyll Site to GitHub Pages
-
 on:
   push:
     branches:
       - main
-
 jobs:
   jekyll:
     runs-on: ubuntu-latest
     steps:
       - name: 📂 setup
         uses: actions/checkout@v2
-
         # include the lines below if you are using jekyll-last-modified-at
         # or if you would otherwise need to fetch the full commit history
         # however this may be very slow for large repositories!
@@ -21,24 +18,24 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           bundler-cache: false # runs 'bundle install' and caches installed gems automatically
-
-
+      # Install ImageMagick for rmagick gem
+      - name: 🖼️ Install ImageMagick
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libmagickwand-dev imagemagick
       # See https://github.com/bglw/jekyll-postcss-v2 for example GitHub Action
       # Install Node as this is needed for PostCSS
       - name: Setup Node
         uses: actions/setup-node@v2
         with:
           node-version: '14'
-
       # Install PostCSS plugins (from your package.json)
       - name: npm install
         run: npm install
-
       - name: 🔨 install dependencies & build site
         uses: limjh16/jekyll-action-ts@v2
         with:
           enable_cache: false
-
       - name: 🚀 deploy
         uses: peaceiris/actions-gh-pages@v3
         with: