buildx failed with: ERROR: failed to solve: process "/bin/sh -c curl -L -O https://github.com/openzfs/zfs/releases/download/zfs-$(cat /zfs_version.txt)/zfs-$(cat /zfs_version.txt).tar.gz && tar xzf zfs-$(cat /zfs_version.txt).tar.gz && mv zfs-$(cat /zfs_version.txt) zfs" did not complete successfully: exit code: 2