update dockerfile

Author: akerl

Dockerfile

@@ -5,7 +5,7 @@ ADD shim/shim /tmp/ducktape/shim
 ADD cert /tmp/ducktape/cert
 ADD https://github.com/dock0/ducktape/releases/download/$DUCKTAPE_VERSION/ducktape /tmp/ducktape/ducktape
 RUN ["/tmp/ducktape/shim", ""]
-RUN ["/tmp/ducktape/ducktape", "https://github.com/dock0/tarball_arch/releases/download/v2.0.1/root.tar.bz2"]
+RUN ["/tmp/ducktape/ducktape", "https://github.com/dock0/tarball_arch/releases/download/v2.1.2/root.tar.bz2"]
 RUN pacman -Syy --needed --noconfirm archlinux-keyring
-RUN pacman -Syu --needed --noconfirm git iproute2 iputils procps-ng tar which licenses util-linux
+RUN pacman -Su --needed --noconfirm git iproute2 iputils procps-ng tar which licenses util-linux
 CMD ["/bin/bash"]

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2020 Les Aker
+Copyright (c) 2022 Les Aker
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal