speed-up alibi-explainer image build (#1395)
speed-up alibi-explainer image build (#1395)

Signed-off-by: Theofilos Papapanagiotou <theofilos@gmail.com>

Co-authored-by: Dan Sun <a649864fdbf3be4b77512ed12216ce1f9fb11785@bloomberg.net>
kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts,kubeflow/kfserving-lts