From f2a3edeed8cfd5cb51663660cd587983002a288a Mon Sep 17 00:00:00 2001
From: Amir Yalon <git@please.nospammail.net>
Date: Wed, 3 Jun 2015 11:25:15 +0300
Subject: [PATCH] Detect and use the DOCKER_HOST environment variable

For working with docker-machine, for example.
---
 launcher | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/launcher b/launcher
index 2776e68..02ed96b 100755
--- a/launcher
+++ b/launcher
@@ -33,7 +33,9 @@ else
   attach_on_run="-d"
 fi
 
-if [ -x "$(which ip 2>/dev/null)" ]; then
+if [ -n "$DOCKER_HOST" ]; then
+  docker_ip=`sed -e 's/^tcp:\/\/\(.*\):.*$/\1/' <<< "$DOCKER_HOST"`
+elif [ -x "$(which ip 2>/dev/null)" ]; then
   docker_ip=`ip addr show docker0 | \
                   grep 'inet ' | \
                   awk '{ split($2,a,"/"); print a[1] }';`
-- 
2.25.1