From 1644609725a12a04858c93e3afdaf9c434c81c91 Mon Sep 17 00:00:00 2001
From: tuksik <tuxik.ru@gmail.com>
Date: Sun, 11 Jan 2015 17:56:48 +0000
Subject: [PATCH] Slimming down Docker containers

---
 README.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/README.md b/README.md
index a8cd0c8..0ad69da 100644
--- a/README.md
+++ b/README.md
@@ -413,6 +413,25 @@ docker rmi $(docker images -q)
 docker images -viz | dot -Tpng -o docker.png
 ```
 
+### Slimming down Docker containers  [Intercity Blog](http://bit.ly/1DycW5A)
+
+- Cleaning APT
+```
+RUN apt-get clean
+RUN rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+```
+- Flatten an image
+```
+ID=$(docker run -d image-name /bin/bash)
+docker export $ID | docker import – flat-image-name
+```
+
+- For backup
+```
+ID=$(docker run -d image-name /bin/bash)
+(docker export $ID | gzip -c > image.tgz)
+gzip -dc image.tgz | docker import - flat-image-name
+```
 ## Tools
 
 * [Fig](https://github.com/wsargent/docker-cheat-sheet#fig)