Official CentOS base image

[shykes]

In addition to the current Ubuntu base image, it would be nice to provide an official CentOS base image in the registry. Several people are already importing their own bases, and a reference base image would save bandwidth and facilitate sharing and re-use.

[shykes]

@unclejack would you like to contribute the recipe for your CentOS base, so we can make it official?

[unclejack]

Yes, it's not a problem. We just need to get it working and then I can write it down as a script.

[shykes]

Here's a build script contributed by @unclejack:

#!/bin/bash

MIRROR_URL="http://centos.netnitco.net/6.4/os/x86_64/"
MIRROR_URL_UPDATES="http://centos.netnitco.net/6.4/updates/x86_64/"

yum install -y febootstrap xz

febootstrap -i bash -i coreutils -i tar -i bzip2 -i gzip -i vim-minimal -i wget -i patch -i diffutils -i iproute -i yum centos centos64  $MIRROR_URL -u $MIRROR_URL_UPDATES
touch centos64/etc/resolv.conf
touch centos64/sbin/init

tar --numeric-owner -Jcpf centos-64.tar.xz -C centos64 .

We'll need someone from the registry team to build it and publish it as base:centos-6.4

[shykes]

@unclejack should we wait for #194 before uploading?

[unclejack]

@shykes #194 is done, I just have to send the pull request.

[mzdaniel]

Thank you so much unclejack. Your little script is awesome!

[unclejack]

@mzdaniel You're welcome.

[shykes]

@unclejack let us know when you've played with creack/centos and think it's good to go. We'll promote it to base:centos

[unclejack]

@shykes I'll prepare a set of tests for it so it can be validated.

[unclejack]

@shykes I've used the CentOS image a bit more and I haven't encountered problems.

It could be moved to the official repo.

[shykes]

@unclejack just to confirm, you're talking about image id 539c0211cd76cdeaedbecf9f023ef774612e331137ce7ebe4ae1b61088e7edbe ?

[unclejack]

@shykes Yes, that's the image I was talking about.

[unclejack]

This image can now be pulled by running:

docker pull centos

[shykes]

👍

Note that we can use tags to expose multiple versions. 'docker run centos' will automatically use the 'latest' tag, but you can also 'docker run centos:6.4'

[shykes]

Thanks for the recipe @unclejack !

[unclejack]

@shykes You're welcome!

[gasi]

Disclaimer: I’m fairly new to Linux.
How do I change the root password on this CentOS image? I tried running

docker run -i -t centos /bin/bash
bash-4.1# passwd
bash: passwd: command not found

But it doesn’t have the passwd command. Is there a default root password set?

[unclejack]

@gasi You have to install the passwd package with yum install passwd. This isn't included in the image as it's not normally required.

[shykes]

Thanks @unclejack!

On Fri, May 31, 2013 at 3:31 PM, unclejack notifications@github.com wrote:

@gasi https://github.com/gasi You have to install the passwd package
with yum install passwd. This isn't included in the image as it's not
normally required.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/290#issuecomment-18775156
.

[gasi]

@unclejack @shykes Confirmed that works. Thanks 👍

[charles-dyfis-net]

@unclejack, which version of febootstrap is that script designed for? (It uses a number of options not present in modern builds as documented at http://libguestfs.org/febootstrap.8.html)

[unclejack]

@charles-dyfis-net You need to use CentOS 6.x to build the image.