buildx failed with: ERROR: failed to solve: process "/bin/sh -c apt-get -qq update && apt-get install -qq -y wget && mkdir -p /etc/apt/keyrings && wget -O - \"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xA2166B8DE8BDC3367D1901C11EE2FF37CA8DA16B\" | gpg --dearmor -o /etc/apt/keyrings/apt-fast.gpg && echo \"deb [signed-by=/etc/apt/keyrings/apt-fast.gpg] http://ppa.launchpad.net/apt-fast/stable/ubuntu focal main\" > /etc/apt/sources.list.d/apt-fast.list && apt-get update -qq && apt-get install -qq -y apt-fast && echo debconf apt-fast/maxdownloads string 16 | debconf-set-selections && echo debconf apt-fast/dlflag boolean true | debconf-set-selections && echo debconf apt-fast/aptmanager string apt-get | debconf-set-selections" did not complete successfully: exit code: 127