Setup xvfb directly

Author: acampbel

.github/workflows/matlab-ci.yml

@@ -35,19 +35,19 @@ jobs:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v4
 
+      - name: Start display server
+        run: |
+          sudo apt-get install xvfb
+          Xvfb :99 &
+          echo "DISPLAY=:99" >> $GITHUB_ENV
+
       # Sets up MATLAB on the GitHub Actions runner
       - name: Setup MATLAB
         uses: matlab-actions/setup-matlab@v2
         with:
           release: latest-including-prerelease
           cache: true
 
-      - name: Setup display
-        uses: pyvista/setup-headless-display-action@v2
-        with:
-          pyvista: false
-
-
 
       - name: Produce MD from MLX
         uses: matlab-actions/run-build@v2