buildx failed with: ERROR: failed to solve: process "/bin/sh -c add-apt-repository --yes \"ppa:git-core/ppa\" && apt-get --yes update && apt-get --yes install \"git=1:2.42.0-0ppa1~ubuntu18.04.1\" && apt-get --yes purge \"software-properties-common\"" did not complete successfully: exit code: 100