Exclude docker image removal (#1465)

Author: antonwolfy

.github/workflows/build-sphinx.yml

@@ -27,6 +27,8 @@ jobs:
 
       - name: Free Disk Space (Ubuntu)
         uses: jlumbroso/free-disk-space@main
+        with:
+          docker-images: false
 
       - name: Install Intel repository
         run: |