Docker image size optimization INIT

Dockerfile

FROM ubuntu:14.04

MAINTAINER Yannick PEREIRA-REIS <yannick.pereira.reis@gmail.com>

image_size_init.sh

$ docker build -t img_size_optim .   
Sending build context to Docker daemon 2.048 kB
Step 1 : FROM ubuntu:14.04
 ---> 6d4946999d4f
Step 2 : MAINTAINER Yannick PEREIRA-REIS <yannick.pereira.reis@gmail.com>
 ---> Running in de8fbb56d363
 ---> 0e898caf0cef
Removing intermediate container de8fbb56d363
Successfully built 0e898caf0cef

$ docker images | grep img_size_optim
img_size_optim                        latest              0e898caf0cef        11 seconds ago       188.3 MB

$ docker history 0e898caf0cef
IMAGE               CREATED             CREATED BY                                      SIZE                COMMENT
0e898caf0cef        2 minutes ago       /bin/sh -c #(nop) MAINTAINER Yannick PEREIRA-   0 B                 
6d4946999d4f        8 months ago        /bin/sh -c #(nop) CMD ["/bin/bash"]             0 B                 
9fd3c8c9af32        8 months ago        /bin/sh -c sed -i 's/^#\s*\(deb.*universe\)$/   1.895 kB            
435050075b3f        8 months ago        /bin/sh -c echo '#!/bin/sh' > /usr/sbin/polic   194.5 kB            
428b411c28f0        8 months ago        /bin/sh -c #(nop) ADD file:b3447f4503091bb6bb   188.1 MB