From 19647f280b7cc2ecd073b13779fa68657fad6b57 Mon Sep 17 00:00:00 2001
From: kev <vimagick@gmail.com>
Date: Wed, 5 Aug 2015 16:55:26 +0800
Subject: [PATCH] update builder

---
 builder/README.md | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/builder/README.md b/builder/README.md
index ff1a9cc..f8d3461 100644
--- a/builder/README.md
+++ b/builder/README.md
@@ -8,20 +8,26 @@ A docker image that builds, tests and pushes docker images from code repositorie
 ```
 builder:
   image: tutum/builder
-  command: vimagick/test
   volumes:
     - ~/.dockercfg:/.dockercfg:ro
+    - /var/run/docker.sock:/var/run/docker.sock:rw
   environment:
     - GIT_REPO=https://github.com/vimagick/dockerfiles.git
     - DOCKERFILE_PATH=/test
+    - IMAGE_NAME=vimagick/test:latest
   privileged: true
 ```
 
+- If `IMAGE_NAME` not specified, it will be built and tested, but not pushed.
+- [Hooks][1] in `$DOCKERFILE_PATH/hooks/` will be executed before and after each step.
+
 ## build docker image
 
 ```
 $ cd ~/fig/builder/
 $ docker login
-$ docker-compose run --rm -e DOCKERFILE_PATH=/tinc builder vimagick/tinc:latest
+$ docker-compose run --rm -e DOCKERFILE_PATH=/tinc -e IMAGE_NAME=vimagick/tinc builder
 $ docker search vimagick/tinc
 ```
+
+[1]: https://github.com/tutumcloud/builder#hooks