fix(iso): Try and improve mirrorlist handling (#7)

setup.sh

@@ -62,6 +62,16 @@ function resize_cow_space () {
 function update_pacman_db () {
     #1.4
     printf -- '%s\n' 'Refreshing mirror list ...'
+    printf -- '%s\n' \
+        '--save /etc/pacman.d/mirrorlist' \
+        '--ipv4' \
+        '--ipv6' \
+        '--protocol https' \
+        '--latest 50' \
+        '--sort rate' \
+        '--score 30' \
+        '--fastest 10' \
+        > '/etc/xdg/reflector/reflector.conf'
     systemctl start reflector
     # In an ISO and for the minimal number of packages we need we do not
     # care about partial upgrades