buildx failed with: ERROR: failed to solve: process "/bin/sh -c git clone https://github.com/spack/spack /spack && export SPACK_ROOT=/spack && . /spack/share/spack/setup-env.sh && spack -e . concretize && spack -e . install && spack -e . gc -y && spack clean -a && rm -rf /spack /spack.yaml /spack.lock /.spack-env /root/.spack" did not complete successfully: exit code: 1