vbatts

vbatts@valse ~ (master *) $ docker pull --all-tags=true fedora
Pulling repository fedora
717a8c89fa48: Download complete 
93be8052dfb8: Download complete 
d7f0e75cf11f: Download complete 
48ecf305d2cf: Download complete 
eb8e83ebb17d: Download complete 
Status: Image is up to date for fedora
vbatts@valse ~ (master *) $ for i in $(docker images -q fedora | sort -u ); do echo $i; docker run -it $i grep ^root /etc/shadow ; echo ; done
717a8c89fa48

vbatts

vbatts@valse ~ (master *) $ go get github.com/vbatts/docker-utils/cmd/docker-save-dockerfile
vbatts@valse ~ (master *) $ docker save busybox | docker-save-dockerfile 
INFO[0000] using stdin ...                              
INFO[0000] Wrote {"busybox" "latest" "4986bf8c15363d1c5d15512d5266f8777bfba4974ac56e3270e7760f6f0a8125"} to "/tmp/docker-save-dockerfile.755321479/Dockerfile.4986bf8c15363d1c5d15512d5266f8777bfba4974ac56e3270e7760f6f0a8125.441581114"
vbatts@valse ~ (master *) $ docker save -o mutt.tar vbatts/mutt
vbatts@valse ~ (master *) $ docker-save-dockerfile ./mutt.tar 
INFO[0000] using "./mutt.tar" ...                       
INFO[0000] Wrote {"vbatts/mutt" "latest" "7eefac143e1c0f8710462b4689ac6330fe2255fd875bffc745c4e5312731f194"} to "/tmp/docker-save-dockerfile.182211867/Dockerfile.7eefac143e1c0f8710462b4689ac6330fe2255fd875bffc745c4e5312731f194.724815294" 

vbatts

#!/bin/sh

# build and see output
go build -x c.go

# if you link to outside libraries
#go build -ldflags '-extldflags "-DFORTIFY_SOURCE"' -x c.go

vbatts

Keybase proof

I hereby claim:

• I am vbatts on github.
• I am vbatts (https://keybase.io/vbatts) on keybase.
• I have a public key whose fingerprint is 5B16 75CE 143A 088B AE92 EDFE 1093 7E57 733F 1362

To claim this, I am signing this object:

vbatts

Overview

Choose or make a simple tar archive to work with.

Layout

$ ls -sh t.tar
24K t.tar

vbatts

Issue

The difference in the sum, has to do with an arbitrary order that can occur
when tar'ing hardlinks. The first file encountered pointing to the inode wins
and has it's Size recorded. Then following files that may have the same inode, then have their LinkName point to the first file's Name, and their Size is 0.

WIP to fix ti https://github.com/vbatts/docker/compare/vbatts-archive_sort

vbatts

#define _GNU_SOURCE
#include <fcntl.h>
#include <sched.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>

#define errExit(msg)    do { perror(msg); exit(EXIT_FAILURE); \
        } while (0)

vbatts

FROM fedora:20

RUN yum erase -y vim-minimal &&\
        yum groupinstall -y "development tools" && \
        yum install -y --setopt=override_install_langs=en --setopt=tsflags=nodocs \
        yum-utils \
        git \
        golang \
        mercurial \
        bzr \

vbatts

FROM busybox
RUN dd if=/dev/urandom of=/dev/null bs=1024k count=5

vbatts

.client
.server
Dockerfile