buildx failed with: ERROR: failed to solve: process "/bin/sh -c wget https://gitweb.gentoo.org/repo/proj/prefix.git/plain/scripts/bootstrap-prefix.sh && chmod +x bootstrap-prefix.sh && sed -i 's/UID/NOUID/g' bootstrap-prefix.sh && ./bootstrap-prefix.sh /gentoo-prefix noninteractive" did not complete successfully: exit code: 1