Docker on Debian Wheezy

I recently got to play with Docker at work and thought, what would it take to get that running on a Debian stable system like Wheezy. In short, surprisingly little if you are not afraid to install a more recent, less tested kernel.

So I guess, let’s start and see what is involved. I decided to follow this Ubuntu installation guide directly from Docker. Due to a bug in Docker, kernel 3.8 or above is advised, so I installed the Debian backports repo. To do so, edit /etc/apt/sources.list and add:

# backports for new kernel
deb wheezy-backports main non-free contrib
# Docker Repo
deb docker main 

Then install the newer kernel by doing:

apt-get update
# needed for the Docker repo
apt-get install apt-transport-https
# key for that repo
apt-key adv --keyserver hkp:// --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
# install new kernel
apt-get -t wheezy-backports install linux-image-amd64 linux-headers-amd64
reboot # last step will reboot your box but you guessed it

Once you have rebooted, check your kernel version to make sure you rebooted on the right one. Then it is time to install the Docker repo and install the software. We edited the repo before and added the key for Docker, so all that remains to be done is:

apt-get install lxc-docker

At this point, you should see the Docker service starting by itself and have a working docker host ready to install all the wonders in the world. You can do a quick check by typing:

# docker version
Client version: 1.1.1
Client API version: 1.13
Go version (client): go1.2.1
Git commit (client): bd609d2
Server version: 1.1.1
Server API version: 1.13
Go version (server): go1.2.1
Git commit (server): bd609d2

If you need convincing on what Docker can do for you, head to their official documentation to get started. I would also suggest you take 10 minutes to look at Docker at Spotify