buildx failed with: ERROR: failed to solve: process "/bin/sh -c export USER_PI=pi && export USER_PI_GROUP=$USER_PI && groupadd --gid 1000 $USER_PI_GROUP && useradd -u 1000 -g $USER_PI_GROUP -G sudo,$TEST_USER_PI_GROUP -d /home/$USER_PI -m -s /bin/bash -p '$1$iV7TOwOe$6ojkJQXyEA9bHd/SqNLNj0' $USER_PI && echo \"$USER_PI ALL=(ALL) NOPASSWD: ALL\" > /etc/sudoers.d/$USER_PI" did not complete successfully: exit code: 6