From 36da3cd4e5a07a467b045c738f720bd47538e6e1 Mon Sep 17 00:00:00 2001
From: Alfonso Acosta <fons@weave.works>
Date: Wed, 1 Feb 2017 14:47:09 +0000
Subject: [PATCH] Initialize USERNS_HOST variable

---
 scope | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scope b/scope
index af9769292f..d9853f5edc 100755
--- a/scope
+++ b/scope
@@ -27,6 +27,7 @@ WEAVESCOPE_DOCKER_ARGS=${WEAVESCOPE_DOCKER_ARGS:-}
 #  "Cannot share the host's network namespace when user namespaces are enabled" for `docker run --net=host`
 # To avoid above errors, use `--userns=host` option to let container use host User Namespace.
 # This option(saved in $USERNS_HOST) will be inserted ONLY IF docker support `--userns` option.
+USERNS_HOST=""
 docker run --help | grep -q -- --userns && USERNS_HOST="--userns=host"
 
 usage() {