Docker 0.3 released: public index, data volumes and open-source registry | Hacker News Reader

Docker 0.3 released: public index, data volumes and open-source registry

github.com

111 pointsshad4215 comments

I thought I'd share a few cool hacks built on top of Docker:

Hipache: https://index.docker.io/u/samalba/hipache/

Heroku buildpacks on Docker: https://groups.google.com/forum/?fromgroups=#!topic/docker-c...

Ready-to-use OpenCV build with python bindings: https://index.docker.io/u/steeve/opencv/

In addition to the public search index and support for data volumes, this release also includes an open-source version of the registry. So anyone can host their containers privately without depending on the central registry.

How does one go about actually using a private registry? Is there a flag to push/pull?

Docker will support arbitrary URLs as argument to push/pull, in addition, eg.

    $ docker pull containers.mycompany.tld/postgres

This still requires some tweaking, but I expect it to get polished rapidly, now that organizations can play with the registry.

Is there a github branch?

Not yet! Actually we probably need a separate github issue to track this. Want to create it? :)

https://github.com/dotcloud/docker/issues/540

I recently asked for a recipe for running GUI apps e.g. browsers in dockers. Here's how:

http://stackoverflow.com/questions/16296753/can-you-run-gui-...

(Yeah, it got closed. Oh well, Stackoverflow colour me surprised)

Oh yeah, I forgot that one - insanely cool hack by Guillaume Charmes: running firefox+vnc from any server with a single command:

    docker run creack/firefox-vnc

I'm glad Docker is getting this level of attentions. I like that they have focused on making building and managing containers easy, and that this functionality stands alone. Compare this to, e.g. Red Hat's OpenShift, which implements a similar container system but bundles it as part of a larger PaaS platform.

https://www.openshift.com/wiki/architecture-overview

https://www.openshift.com/wiki/introduction-to-cartridge-bui...

I like the new description line of "Docker is an open-source engine which automates the deployment of applications as highly portable, self-sufficient containers" better than the old one: https://news.ycombinator.com/item?id=5609995. "Improved, as promised" seems to a major theme here. :)

I'm glad you noticed :) We're trying really hard to address problems and suggestions as they come up, and be quick about it.

What's the catch? Where can I read something about the limitations of Docker? Where will it leaking through that you're running in a shared container?

I can see some things; the containers will be sharing kernel resources (FS/IO buffers, kernel config etc) but is that all?

I don't know the specifics but it uses standard (if new) Linux kernel tech: LXC [1], namespaces [2], cgroups [3] and AUFS [4] to create something similar to a BSD or Solaris jail.

I would research issues with those systems.

1 - http://en.wikipedia.org/wiki/LXC 2 - http://kernelnewbies.org/Linux_3.8#head-fc2604c967c200a26f33... 3 - http://en.wikipedia.org/wiki/Cgroups 4 - http://aufs.sourceforge.net/

Anyone have news on the progress of the Docker plugin for Vagrant?

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