buildx failed with: ERROR: failed to solve: process "/bin/sh -c git clone --branch $VLLM_VERSION --depth 1 https://github.com/vllm-project/vllm.git . && pip install --upgrade pip && pip install -r requirements-build.txt --extra-index-url https://download.pytorch.org/whl/cpu && PIP_EXTRA_INDEX_URL=\"https://download.pytorch.org/whl/cpu\" VLLM_TARGET_DEVICE=\"openvino\" python -m pip install -v ." did not complete successfully: exit code: 1