Standardize mirror messaging; simplify apt update

Replace inconsistent msg_info calls with msg_warn for mirror-list warnings and msg_custom for "Attempting mirror" lines to unify output formatting in misc/build.func and misc/install.func. Simplify tools/pve/update-lxcs-cron.sh by removing the long mirror-probing block and using a straightforward apt-get update + noninteractive dist-upgrade (and cleanup of EXTERNALLY-MANAGED) in containers to reduce complexity and improve maintainability.

misc/build.func

@@ -4724,9 +4724,9 @@ EOF
       if [[ $mirror_exit -eq 2 ]]; then
         msg_warn "Multiple mirrors failed (possible CDN synchronization issue)."
         if [[ "$var_os" == "ubuntu" ]]; then
-          msg_info "Find Ubuntu mirrors at: https://launchpad.net/ubuntu/+archivemirrors"
+          msg_warn "Find Ubuntu mirrors at: https://launchpad.net/ubuntu/+archivemirrors"
         else
-          msg_info "Find Debian mirrors at: https://www.debian.org/mirror/list"
+          msg_warn "Find Debian mirrors at: https://www.debian.org/mirror/list"
         fi
         local custom_mirror=""
         while true; do

misc/install.func

@@ -283,7 +283,7 @@ pkg_update() {
       others_pick=$(printf '%s\n' $others_ok | shuf | head -3 | xargs)
 
       for mirror in $others_pick; do
-        msg_info "Attempting mirror: ${mirror}"
+        msg_custom "${INFO}" "${YW}" "Attempting mirror: ${mirror}"
         if _try_apt_mirror "$mirror"; then
           apt_ok=true
           break
@@ -299,7 +299,7 @@ pkg_update() {
           primary="ftp.debian.org"
         fi
         if timeout 2 bash -c "echo >/dev/tcp/$primary/80" 2>/dev/null; then
-          msg_info "Attempting mirror: ${primary}"
+          msg_custom "${INFO}" "${YW}" "Attempting mirror: ${primary}"
           if _try_apt_mirror "$primary"; then
             apt_ok=true
           fi
@@ -314,7 +314,7 @@ pkg_update() {
         regional_pick=$(printf '%s\n' $regional_ok | shuf | head -3 | xargs)
 
         for mirror in $regional_pick; do
-          msg_info "Attempting mirror: ${mirror}"
+          msg_custom "${INFO}" "${YW}" "Attempting mirror: ${mirror}"
           if _try_apt_mirror "$mirror"; then
             apt_ok=true
             break
@@ -326,9 +326,9 @@ pkg_update() {
       if [[ "$apt_ok" != true ]]; then
         msg_warn "Multiple mirrors failed (possible CDN synchronization issue)."
         if [[ "$distro" == "ubuntu" ]]; then
-          msg_info "Find Ubuntu mirrors at: https://launchpad.net/ubuntu/+archivemirrors"
+          msg_warn "Find Ubuntu mirrors at: https://launchpad.net/ubuntu/+archivemirrors"
         else
-          msg_info "Find Debian mirrors at: https://www.debian.org/mirror/list"
+          msg_warn "Find Debian mirrors at: https://www.debian.org/mirror/list"
         fi
         while true; do
           read -rp "  Enter a mirror hostname (or 'skip' to abort): " custom_mirror </dev/tty
@@ -359,7 +359,7 @@ pkg_update() {
       local apk_ok=false
       for m in $(printf '%s\n' $alpine_mirrors | shuf); do
         if timeout 2 bash -c "echo >/dev/tcp/$m/80" 2>/dev/null; then
-          msg_info "Attempting mirror: ${m}"
+          msg_custom "${INFO}" "${YW}" "Attempting mirror: ${m}"
           cat <<EOF >/etc/apk/repositories
 http://$m/alpine/latest-stable/main
 http://$m/alpine/latest-stable/community

tools/pve/update-lxcs-cron.sh

@@ -35,33 +35,7 @@ function update_container() {
   alpine) pct exec "$container" -- ash -c "apk -U upgrade" ;;
   archlinux) pct exec "$container" -- bash -c "pacman -Syyu --noconfirm" ;;
   fedora | rocky | centos | alma) pct exec "$container" -- bash -c "dnf -y update && dnf -y upgrade" ;;
-  ubuntu | debian | devuan) pct exec "$container" -- bash -c '
+  ubuntu | debian | devuan) pct exec "$container" -- bash -c "apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -o Dpkg::Options::='--force-confold' dist-upgrade -y; rm -rf /usr/lib/python3.*/EXTERNALLY-MANAGED" ;;
-    EU_MIRRORS="ftp.de.debian.org ftp.fr.debian.org ftp.nl.debian.org ftp.uk.debian.org ftp.ch.debian.org ftp.se.debian.org ftp.it.debian.org ftp.fau.de ftp.halifax.rwth-aachen.de debian.mirror.lrz.de mirror.init7.net debian.ethz.ch mirrors.dotsrc.org debian.mirrors.ovh.net"
-    US_MIRRORS="ftp.us.debian.org ftp.ca.debian.org debian.csail.mit.edu mirrors.ocf.berkeley.edu mirrors.wikimedia.org debian.osuosl.org mirror.cogentco.com"
-    AP_MIRRORS="ftp.au.debian.org ftp.jp.debian.org ftp.tw.debian.org ftp.kr.debian.org ftp.hk.debian.org ftp.sg.debian.org mirror.aarnet.edu.au mirror.nitc.ac.in"
-
-    TZ=$(cat /etc/timezone 2>/dev/null || echo "UTC")
-    case "$TZ" in
-      Europe/*|Arctic/*) REGIONAL="$EU_MIRRORS"; OTHERS="$US_MIRRORS $AP_MIRRORS" ;;
-      America/*) REGIONAL="$US_MIRRORS"; OTHERS="$EU_MIRRORS $AP_MIRRORS" ;;
-      Asia/*|Australia/*|Pacific/*) REGIONAL="$AP_MIRRORS"; OTHERS="$EU_MIRRORS $US_MIRRORS" ;;
-      *) REGIONAL=""; OTHERS="$EU_MIRRORS $US_MIRRORS $AP_MIRRORS" ;;
-    esac
-
-    apt-get update || {
-      echo "Acquire::By-Hash \"no\";" >/etc/apt/apt.conf.d/99no-by-hash
-      ALL_MIRRORS="$(printf "%s\n" $OTHERS | shuf | head -3 | xargs) ftp.debian.org $(printf "%s\n" $REGIONAL | shuf | head -3 | xargs)"
-      for mirror in $ALL_MIRRORS; do
-        timeout 2 bash -c "echo >/dev/tcp/$mirror/80" 2>/dev/null || continue
-        for src in /etc/apt/sources.list.d/debian.sources /etc/apt/sources.list; do
-          [ -f "$src" ] && sed -i "s|URIs: http[s]*://[^/]*/|URIs: http://${mirror}/|g; s|deb http[s]*://[^/]*/|deb http://${mirror}/|g" "$src"
-        done
-        rm -rf /var/lib/apt/lists/*
-        if apt-get update; then echo "  Using mirror: $mirror"; break; else echo "  Mirror $mirror failed"; fi
-      done
-    }
-    DEBIAN_FRONTEND=noninteractive apt-get -o Dpkg::Options::="--force-confold" dist-upgrade -y
-    rm -rf /usr/lib/python3.*/EXTERNALLY-MANAGED' ;;
   opensuse) pct exec "$container" -- bash -c "zypper ref && zypper --non-interactive dup" ;;
   *) echo " [Warn] Unknown OS type '$os' for container $container, skipping" ;;
   esac