Another shot at xvfb on linux.

Author: nedtwigg

.github/workflows/ci.yml

@@ -30,13 +30,15 @@ jobs:
           gradle-home-cache-cleanup: true
       - name: git fetch origin main
         run: git fetch origin main
-      - if: runner.os == 'Linux'
-        run: |
-          sudo apt-get install xvfb
-          Xvfb :99 &
-          export DISPLAY=:99
       - name: gradlew build
-        run: ./gradlew build
+        run: |
+          if [ "$RUNNER_OS" == "Linux" ]; then
+            sudo apt-get install xvfb
+            Xvfb :99 &
+            export DISPLAY=:99
+          fi
+          ./gradlew build
+        shell: bash
       - name: junit result
         uses: mikepenz/action-junit-report@v3
         if: always() # always run even if the previous step fails