options to set DNS (#803)

ct/nginx-proxy-manager-v4.sh

@@ -90,6 +90,10 @@ function default_settings() {
   NET=dhcp
   echo -e "${DGN}Using Gateway Address: ${BGN}Default${CL}"
   GATE=""
+  echo -e "${DGN}Using DNS Search Domain: ${BGN}Host${CL}"
+  SD=""
+  echo -e "${DGN}Using DNS Server Address: ${BGN}Host${CL}"
+  NS=""
   echo -e "${DGN}Using MAC Address: ${BGN}Default${CL}"
   MAC=""
   echo -e "${DGN}Using VLAN Tag: ${BGN}Default${CL}"
@@ -192,6 +196,30 @@ function advanced_settings() {
       echo -e "${DGN}Using Gateway IP Address: ${BGN}$GATE1${CL}"
     fi
   fi
+  SD=$(whiptail --inputbox "Set a DNS Search Domain (leave blank for HOST)" 8 58 --title "DNS Search Domain" --cancel-button Exit-Script 3>&1 1>&2 2>&3)
+  exitstatus=$?
+  if [ $exitstatus = 0 ]; then
+    if [ -z $SD ]; then
+      SD=""
+      echo -e "${DGN}Using DNS Search Domain: ${BGN}Host${CL}"
+    else
+      SX=$SD
+      SD="-searchdomain=$SD"
+      echo -e "${DGN}Using DNS Search Domain: ${BGN}$SX${CL}"
+    fi
+  fi
+  NS=$(whiptail --inputbox "Set a DNS Server IP (leave blank for HOST)" 8 58 --title "DNS SERVER IP" --cancel-button Exit-Script 3>&1 1>&2 2>&3)
+  exitstatus=$?
+  if [ $exitstatus = 0 ]; then
+    if [ -z $NS ]; then
+      NS=""
+      echo -e "${DGN}Using DNS Server IP Address: ${BGN}Host${CL}"
+    else
+      NX=$NS
+      NS="-nameserver=$NS"
+      echo -e "${DGN}Using DNS Server IP Address: ${BGN}$NX${CL}"
+    fi
+  fi
   MAC1=$(whiptail --inputbox "Set a MAC Address(leave blank for default)" 8 58 --title "MAC ADDRESS" --cancel-button Exit-Script 3>&1 1>&2 2>&3)
   exitstatus=$?
   if [ $exitstatus = 0 ]; then
@@ -258,6 +286,8 @@ export PCT_DISK_SIZE=$DISK_SIZE
 export PCT_OPTIONS="
   -features $FEATURES
   -hostname $HN
+  $SD
+  $NS
   -net0 name=eth0,bridge=$BRG$MAC,ip=$NET$GATE$VLAN
   -onboot 1
   -cores $CORE_COUNT