client: Dockerfiles: local: root: package updates

- Prevents system upgrades from using Arch's `root` package
  * Currently, their package does not build with C++20 support

- Updates remote image package artifact location
  * Remote image's build artifact moved from /home/builder to /root

- Uses wildcard for local `root` package version
  * Reduces maintenance since any remote bump should rebuild this module

client/Dockerfiles/local/finance/archlinux/Dockerfile.root.in

@@ -21,13 +21,16 @@
 
 USER root
 
+# Prevent system upgrades from using Arch's `root` package
+RUN sed -i 's:^#IgnorePkg   =:IgnorePkg   = root:' /etc/pacman.conf
+
 # ROOT.cern
 # https://hub.docker.com/r/evergreencrypto/root
-COPY --from=evergreencrypto/root:archlinux /home/builder/root/root-6.36.04-6-x86_64.pkg.tar.zst /usr/local/src/
+COPY --from=evergreencrypto/root:archlinux /root/root-*.pkg.tar.zst /usr/local/src/
 
 WORKDIR /usr/local/src
 RUN pacman -Syu --noconfirm --disable-download-timeout
-RUN pacman -U root-6.36.04-6-x86_64.pkg.tar.zst --noconfirm --disable-download-timeout
+RUN pacman -U root-*.pkg.tar.zst --noconfirm --disable-download-timeout
 
 # docker-finance
 RUN pacman -Syu \