buildx failed with: ERROR: failed to build: failed to solve: process "/bin/bash -o pipefail -c mamba env update -n base -f /tmp/environment.yml && pip uninstall -y torch torchvision && if [ \"$PYTORCH_VARIANT\" = \"cpu\" ]; then echo \"Installing CPU-only PyTorch\" && pip install --no-cache-dir --force-reinstall torch torchvision --index-url https://download.pytorch.org/whl/cpu; else echo \"Installing CUDA-enabled PyTorch\" && pip install --no-cache-dir --force-reinstall torch torchvision; fi && pip install --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple/ \"ipytestsuite[ai]\" && mamba clean --all -f -y && rm -rf ~/.cache/pip && fix-permissions \"${CONDA_DIR}\" && fix-permissions \"/home/${NB_USER}\"" did not complete successfully: exit code: 1