diff --git a/Dockerfile b/Dockerfile
index 428b7a5b7..68442ff3f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -69,4 +69,4 @@ ENV MLRUN_API_PROXY_URL="${MLRUN_API_PROXY_URL:-http://localhost:8090}" \
     MLRUN_NUCLIO_UI_URL="${MLRUN_NUCLIO_UI_URL:-http://localhost:8070}" \
     MLRUN_V3IO_ACCESS_KEY="${MLRUN_V3IO_ACCESS_KEY:-\"\"}"
 
-CMD echo resolver $(awk 'BEGIN{ORS=" "} $1=="nameserver" {print $2}' /etc/resolv.conf) ";" > /etc/nginx/resolvers.conf && /etc/nginx/run_nginx
+CMD echo resolver $(awk 'BEGIN{ORS=" "} $1=="nameserver" {if ($2 ~ /:/) print "["$2"]"; else print $2}' /etc/resolv.conf) ";" > /etc/nginx/resolvers.conf && /etc/nginx/run_nginx