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Fix outdated docs explaining how to setup a dev environment. Building docker with docker ftw

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Solomon Hykes 2013-07-09 16:48:16 -07:00
parent 0acdef4549
commit a839b36e55
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docs/sources/contributing/devenvironment.rst
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@ -5,53 +5,52 @@
Setting Up a Dev Environment
============================
Instructions that have been verified to work on Ubuntu Precise 12.04 (LTS) (64-bit),
To make it easier to contribute to Docker, we provide a standard development environment. It is important that
the same environment be used for all tests, builds and releases. The standard development environment defines
all build dependencies: system libraries and binaries, go environment, go dependencies, etc.
Dependencies
------------
Step 1: install docker
----------------------
**Linux kernel 3.8**
Docker's build environment itself is a docker container, so the first step is to install docker on your system.
Due to a bug in LXC docker works best on the 3.8 kernel. Precise comes with a 3.2 kernel, so we need to upgrade it. The kernel we install comes with AUFS built in.
You can follow the `install instructions most relevant to your system <https://docs.docker.io/en/latest/installation/>`.
Make sure you have a working, up-to-date docker installation, then continue to the next step.
.. code-block:: bash
Step 2: check out the source
----------------------------
# install the backported kernel
sudo apt-get update && sudo apt-get install linux-image-generic-lts-raring
::
# reboot
sudo reboot
Installation
------------
.. code-block:: bash
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:gophers/go
sudo apt-get update
sudo apt-get -y install lxc xz-utils curl golang-stable git aufs-tools
export GOPATH=~/go/
export PATH=$GOPATH/bin:$PATH
mkdir -p $GOPATH/src/github.com/dotcloud
cd $GOPATH/src/github.com/dotcloud
git clone git://github.com/dotcloud/docker.git
git clone http://git@github.com/dotcloud/docker
cd docker
go get -v github.com/dotcloud/docker/...
go install -v github.com/dotcloud/docker/...
Step 3: build
-------------
When you are ready to build docker, run this command:
::
docker build -t docker .
This will build the revision currently checked out in the repository. Feel free to check out the version
of your choice.
If the build is successful, congratulations! You have produced a clean build of docker, neatly encapsulated
in a standard build environment.
You can run an interactive session in the newly built container:
::
docker run -i -t docker bash
Then run the docker daemon,
To extract the binaries from the container:
.. code-block:: bash
::
docker run docker sh -c 'cat $(which docker)' > docker-build && chmod +x docker-build
sudo $GOPATH/bin/docker -d
Run the ``go install`` command (above) to recompile docker.