diff --git a/frontend/00-browsertrix-nginx-init.sh b/frontend/00-browsertrix-nginx-init.sh
index eb1a5313..60a51d6c 100755
--- a/frontend/00-browsertrix-nginx-init.sh
+++ b/frontend/00-browsertrix-nginx-init.sh
@@ -24,6 +24,5 @@ else
 fi
 
 mkdir -p /etc/nginx/resolvers/
-echo resolver $(grep -oP '(?<=nameserver\s)[^\s]+' /etc/resolv.conf | awk '{ if ($1 ~ /:/) { printf "[" $1 "] "; } else { printf $1 " "; } }') valid=10s ipv6=off";" >/etc/nginx/resolvers/resolvers.conf
-
+sed /etc/resolv.conf -nre '/nameserver/ {s/nameserver/resolver/;s/\b([a-f0-9:]+:[a-f0-9:]+)\b/[\1]/;   s/$/valid=10s;/;p}' > /etc/nginx/resolvers/resolvers.conf
 cat /etc/nginx/resolvers/resolvers.conf