Add BRANCH parameter used in Dockerfile

Change-Id: I09e58d367ee322bb29d5e502d2ba75811ef7e9c3
Signed-off-by: Julien <zhang.jun3g@zte.com.cn>

diff --git a/docker/Dockerfile b/docker/Dockerfile
index 48e254f..fa78819 100644 (file)
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,7 @@
 FROM centos:7\r
 LABEL escalator_image_version=1.0\r
+ARG BRANCH\r
+ENV BRANCH=${BRANCH:-master}\r
 RUN yum -y update\r
 RUN yum -y install centos-release-openstack-newton\r
 RUN yum -y install \\r