falling back to buildx: Error: failed with: Error: failed to solve: process "/bin/sh -c set -xe; mkdir -p ${XML2_BUILD_DIR}; curl -Ls https://download.gnome.org/sources/libxml2/${VERSION_XML2%.*}/libxml2-${VERSION_XML2}.tar.xz | tar xJC ${XML2_BUILD_DIR} --strip-components=1" did not complete successfully: exit code: 2