fix gateway as resoler

lib/install.sh

@@ -3,7 +3,11 @@
 MIAOU_BASEDIR=$(readlink -f "$(dirname "$0")/..")
 # shellcheck source=/dev/null
 . "$MIAOU_BASEDIR/lib/functions.sh"
-readonly MIAOU_BASEDIR
+
+FDN_DOMAINNAME=fdn.fr
+FDN_RESOLVER=80.67.169.12
+
+readonly MIAOU_BASEDIR FDN_DOMAINNAME FDN_RESOLVER
 
 miaou_init
 
@@ -367,6 +371,16 @@ function miaou_resolver() {
     bridge=$(ip addr show lxdbr0 | grep "inet\b" | awk '{print $2}' | cut -d/ -f1)
     gateway=$(ip route | grep default | cut -d' ' -f3)
 
+    echo -n "test gateway <$gateway> as DNS resolver..."
+    if dig +short "@$gateway" "$FDN_DOMAINNAME" >/dev/null; then
+        resolver="$gateway"
+        PREFIX="" echoinfo DONE
+    else
+        PREFIX="" echowarn FAILED
+        echo "resolver replaced by FDN_RESOLVER=<$FDN_RESOLVER>"
+        resolver="$FDN_RESOLVER"
+    fi
+
     if command -v nmcli &>/dev/null; then
         if [[ ! -f /etc/NetworkManager/dispatcher.d/50-miaou-resolver ]]; then
             echo -n "use NetworkManager dispatcher to deal with LXD bridge automatically..."
@@ -388,11 +402,11 @@ function miaou_resolver() {
     fi
 
     if ! grep -q "nameserver $bridge" /etc/resolv.conf; then
-        echo -n "customize resolv.conf from scratch with bridge=<$bridge>, gatewary=<$gateway> ..."
+        echo -n "customize resolv.conf from scratch with bridge=<$bridge>, resolver=<$resolver> ..."
         sudo tee /etc/resolv.conf &>/dev/null <<EOF
 # generated by miaou            
 nameserver $bridge # LXD bridge
-nameserver $gateway # gateway
+nameserver $resolver # resolver
 EOF
         PREFIX="" echoinfo DONE
     else

scripts/lxc-miaou-create

@@ -58,8 +58,8 @@ function create() {
     [[ "$OPTION_SSH" == true ]] && packages+=(openssh-server)
     packages_string=$(join ', ' "${packages[@]}")
 
-    timezone='Indian/Reunion'       #FIXME: should be retrieved from host
-    debian_repo='debian.mithril.re' #FIXME: should be retrieved from host
+    timezone=$(cat /etc/timezone)
+    debian_repo=$(cat /etc/apt/sources.list | head -n1 | cut -d '/' -f3)
 
     user_data="$(
         cat <<EOF