Call script with unbuffer when using Docker

.github/workflows/end-to-end-test-ubuntu.yml

@@ -80,7 +80,7 @@ jobs:
           export PATH="$PATH:$(pwd)/qlever-control:$(pwd)/qlever-binaries"
           mkdir -p ${{github.workspace}}/qlever-indices/olympics.3 && cd $_
           qlever setup-config olympics
-          qlever get-data index index-stats
+          unbuffer qlever get-data index index-stats
           qlever docker.USE_DOCKER=false start status test-query
           unbuffer qlever docker.USE_DOCKER=true stop status
           unbuffer qlever docker.USE_DOCKER=true restart status test-query