Github user paul-guo- commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/1073#discussion_r94380992
--- 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
+```
+* setup a 5 nodes virtual cluster for Apache HAWQ build and test.
+```
+make run
+```
+Now let's have a look about what we creted.
+```
+[root@localhost hawq-docker]# docker ps -a
+CONTAINER ID IMAGE COMMAND
CREATED STATUS PORTS NAMES
+382b2b3360d1 hawq/hawq-test:centos7 "entrypoint.sh bash" 2
minutes ago Up 2 minutes centos7-datanode3
+86513c331d45 hawq/hawq-test:centos7 "entrypoint.sh bash" 2
minutes ago Up 2 minutes centos7-datanode2
+c0ab10e46e4a hawq/hawq-test:centos7 "entrypoint.sh bash" 2
minutes ago Up 2 minutes centos7-datanode1
+e27beea63953 hawq/hawq-test:centos7 "entrypoint.sh bash" 2
minutes ago Up 2 minutes centos7-namenode
+1f986959bd04 hawq/hawq-dev:centos7 "/bin/true" 2
minutes ago Created centos7-data
+```
+**centos7-data** is a data container and mounted to /data directory on all
other containers to provide a shared storage for the cluster.
+
+# Build and Test Apache HAWQ
+* attach to namenode
+```
+docker exec -it centos7-namenode bash
+```
+* check if HDFS working well
+```
+sudo -u hdfs hdfs dfsadmin -report
+```
+* clone Apache HAWQ code to /data direcotry
+```
+git clone https://github.com/apache/incubator-hawq.git /data/hawq
+```
+* build Apache HAWQ
+```
+cd /data/hawq
+./configure --prefix=/data/hawq-dev
+make
+make install
+```
+(When you are using CentOS 6, run command `scl enable devtoolset-2 bash`
before
+configuring hawq and run command `exit` after installing hawq.)
--- End diff --
Why "exit" command is needed? exit the container?
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