From a55230e6dd67ce82fe07edae5b3b7a8967323b4a Mon Sep 17 00:00:00 2001
From: Will Sargent <wsargent@users.noreply.github.com>
Date: Sat, 20 May 2017 11:40:21 -0700
Subject: [PATCH] Add DOCKER_HOST_IP

---
 README.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 6ff05cc..c55bb72 100644
--- a/README.md
+++ b/README.md
@@ -628,6 +628,17 @@ or using a [go template](https://docs.docker.com/engine/reference/commandline/in
 docker inspect -f '{{ .NetworkSettings.IPAddress }}' <container_name>
 ```
 
+or when building an image from Dockerfile, when you want to pass in a build argument:
+
+```
+DOCKER_HOST_IP=`ifconfig | grep -E "([0-9]{1,3}\.){3}[0-9]{1,3}" | grep -v 127.0.0.1 | awk '{ print $2 }' | cut -f2 -d: | head -n1`
+echo DOCKER_HOST_IP = $DOCKER_HOST_IP
+docker build \
+  --build-arg ARTIFACTORY_ADDRESS=$DOCKER_HOST_IP 
+  -t sometag \
+  some-directory/
+ ```
+
 ### Get port mapping
 
 ```