fix: rate-mirrors is not supposed to be run as root

Author: zstg

Dockerfile

@@ -24,7 +24,7 @@ RUN pacman -Syy --noconfirm && \
 #RUN curl -s "https://archlinux.org/mirrorlist/?country=IN&country=US&country=DE&country=GB&protocol=https&use_mirror_status=on" | sed -e 's/^#Server/Server/' -e '/^#/d' | rankmirrors -n 5 -
 RUN export TMPFILE="$(mktemp)"; \
    sudo true; \
-   rate-mirrors --save=$TMPFILE arch --max-delay=43200 \
+   sudo -u nobody rate-mirrors --save=$TMPFILE arch --max-delay=43200 \
      && sudo mv /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist-backup \
      && sudo mv $TMPFILE /etc/pacman.d/mirrorlist