Github user guofengrichard commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/1073#discussion_r94710415
--- Diff: contrib/hawq-docker/README.md ---
@@ -0,0 +1,96 @@
+# hawq-docker
+
+hawq-docker is based on *wangzw's* repo *hawq-devel-env*. It is the docker
images and scripts to help developers of Apache HAWQ to setup building and
testing environment with docker.
+
+Both CentOS 7 and CentOS 6 are supported.
+Change variable **OS_VERSION** (:= centos7 OR centos6) in Makefile to
switch between CentOS 7 and CentOS 6.
+
+Take CentOS 7 as an example below.
+
+# Install docker
+* following the instructions to install docker.
+https://docs.docker.com/
+
+# Setup build and test environment
+* clone this repository
+```
+git clone https://github.com/guofengrichard/hawq-docker.git .
+```
+* Get the docker images
+```
+ cd hawq-docker
+ make pull (recommended)
+OR
+ make build
--- End diff --
Agree with Paul.
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