Account for port, or lack of, in PIHOLE_DNS_1

Signed-off-by: Dan Schaper <dan.schaper@pi-hole.net>

gravity.sh

@@ -257,7 +257,13 @@ gravity_DownloadBlocklistFromUrl() {
    esac
 
   if [[ "${blocked}" == true ]]; then
-    ip=$(dig "@${PIHOLE_DNS_1}" +short "${domain}")
+    printf -v ip_addr "%s" ${PIHOLE_DNS_1%#*}
+    if [[ ${PIHOLE_DNS_1} != *"#"* ]]; then
+        port=53
+    else
+        printf -v port "%s" ${PIHOLE_DNS_1#*#}
+    fi
+    ip=$(dig "@${ip_addr}" -p "${port}" +short "${domain}")
     if [[ $(echo "${url}" | awk -F '://' '{print $1}') = "https" ]]; then
       port=443;
     else port=80