Improve network connectivity and DNS checks

Revamp network_check(): add an ipv4_connected flag and explicit ping tests against Cloudflare/Google/Quad9, show clearer msg_ok/msg_error output, and only prompt the user when no IPv4 connectivity is detected. Replace the single github.com resolution with DNS checks for multiple GitHub-related hosts (github.com, raw.githubusercontent.com, api.github.com, git.community-scripts.org), build a combined status string, and fatal out if any of those fail to resolve. Overall this tightens connectivity validation for installs that depend on GitHub resources and provides clearer user feedback.

misc/alpine-install.func

@@ -90,11 +90,18 @@ setting_up_container() {
 network_check() {
   set +e
   trap - ERR
+  ipv4_connected=false
+
+  # Check IPv4 connectivity to Cloudflare, Google & Quad9 DNS servers
   if ping -c 1 -W 1 1.1.1.1 &>/dev/null || ping -c 1 -W 1 8.8.8.8 &>/dev/null || ping -c 1 -W 1 9.9.9.9 &>/dev/null; then
-    ipv4_status="${GN}✔${CL} IPv4"
+    msg_ok "IPv4 Internet Connected"
+    ipv4_connected=true
   else
-    ipv4_status="${RD}✖${CL} IPv4"
-    read -r -p "Internet NOT connected. Continue anyway? <y/N> " prompt
+    msg_error "IPv4 Internet Not Connected"
+  fi
+
+  if [[ $ipv4_connected == false ]]; then
+    read -r -p "No Internet detected, would you like to continue anyway? <y/N> " prompt
     if [[ "${prompt,,}" =~ ^(y|yes)$ ]]; then
       echo -e "${INFO}${RD}Expect Issues Without Internet${CL}"
     else
@@ -102,12 +109,28 @@ network_check() {
       exit 122
     fi
   fi
-  RESOLVEDIP=$(getent hosts github.com | awk '{ print $1 }')
-  if [[ -z "$RESOLVEDIP" ]]; then
-    msg_error "Internet: ${ipv4_status}  DNS Failed"
+
+  # DNS resolution checks for GitHub-related domains
+  GIT_HOSTS=("github.com" "raw.githubusercontent.com" "api.github.com" "git.community-scripts.org")
+  GIT_STATUS="Git DNS:"
+  DNS_FAILED=false
+
+  for HOST in "${GIT_HOSTS[@]}"; do
+    RESOLVEDIP=$(getent hosts "$HOST" | awk '{ print $1 }' | grep -E '(^([0-9]{1,3}\.){3}[0-9]{1,3}$)|(^[a-fA-F0-9:]+$)' | head -n1)
+    if [[ -z "$RESOLVEDIP" ]]; then
+      GIT_STATUS+="$HOST:($DNSFAIL)"
+      DNS_FAILED=true
+    else
+      GIT_STATUS+=" $HOST:($DNSOK)"
+    fi
+  done
+
+  if [[ "$DNS_FAILED" == true ]]; then
+    fatal "$GIT_STATUS"
   else
-    msg_ok "Internet: ${ipv4_status}  DNS: ${BL}${RESOLVEDIP}${CL}"
+    msg_ok "$GIT_STATUS"
   fi
+
   set -e
   trap 'error_handler $LINENO "$BASH_COMMAND"' ERR
 }

misc/build.func

@@ -4998,7 +4998,7 @@ create_lxc_container() {
       return 0
     fi
 
-    msg_info "An update for the Proxmox LXC stack is available"
+    msg_warn "An update for the Proxmox LXC stack is available"
     echo "  pve-container: installed=${_pvec_i:-n/a}  candidate=${_pvec_c:-n/a}"
     echo "  lxc-pve     : installed=${_lxcp_i:-n/a}  candidate=${_lxcp_c:-n/a}"
     echo