Update sanity-check.yml

Author: adrianboguszewski

.github/workflows/sanity-check.yml

@@ -49,7 +49,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r ${{ matrix.subproject }}/requirements.txt
-        pip list
         
     - name: Download sample video file
       run: |
@@ -68,6 +67,11 @@ jobs:
           echo "stream=false" >> $GITHUB_ENV
         fi
 
+    - name: Set environment to avoid OpenCV GUI errors
+      run: |
+        # This will prevent OpenCV from trying to display any GUI windows during execution
+        echo "DISPLAY=:99" >> $GITHUB_ENV
+
     - name: Run the demo
       run: |
         cd ${{ matrix.subproject }}