Merge pull request #169 from publify/fix-ci-build

Provide needed graphics processing dependency in CI

Author: mvz

.github/workflows/ruby.yml

@@ -31,6 +31,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - name: Install GraphicsMagick
+        run: sudo apt-get install -y --no-install-recommends graphicsmagick
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with: