deb http://deb.debian.org/debian buster-backports main
EOF
+# oooo annoying, pin preferences for buster-backports
+cat << EOF > /etc/apt/prerefences.d/99buster-backports
+Package: *
+Pin: release a=buster-backports
+Pin-Priority: 900
+EOF
+
apt-get update -y
apt-get upgrade -y
apt-get install -y autoconf \