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moby--moby/contrib/brew/README.md
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docker-brew

docker-brew is a command-line tool used to build the docker standard library.

Install instructions

  1. Install python if it isn't already available on your OS of choice
  2. Install the easy_install tool (sudo apt-get install python-setuptools for Debian)
  3. Install the python package manager, pip (easy_install pip)
  4. Run the following command: pip install -r requirements.txt
  5. You should now be able to use the docker-brew script as such.

Basics

./docker-brew -h

Display usage and help.

./docker-brew

Default build from the default repo/branch. Images will be created under the library/ namespace. Does not perform a remote push.

./docker-brew -n mycorp.com -b stable --push git://github.com/mycorp/docker

Will fetch the library definition files in the stable branch of the git://github.com/mycorp/docker repository and create images under the mycorp.com namespace (e.g. mycorp.com/ubuntu). Created images will then be pushed to the official docker repository (pending: support for private repositories)

Library definition files

The library definition files are plain text files found in the library/ subfolder of the docker repository.

File names

The name of a definition file will determine the name of the image(s) it creates. For example, the library/ubuntu file will create images in the <namespace>/ubuntu repository. If multiple instructions are present in a single file, all images are expected to be created under a different tag.

Instruction format

Each line represents a build instruction. There are different formats that docker-brew is able to parse.

<git-url>
git://github.com/dotcloud/hipache
https://github.com/dotcloud/docker.git

The simplest format. docker-brew will fetch data from the provided git repository from the HEADof its master branch. Generated image will be tagged as latest. Use of this format is discouraged because there is no way to ensure stability.

<docker-tag> <git-url>
bleeding-edge git://github.com/dotcloud/docker
unstable https://github.com/dotcloud/docker-redis.git

A more advanced format. docker-brew will fetch data from the provided git repository from the HEADof its master branch. Generated image will be tagged as <docker-tag>. Recommended if we always want to provide a snapshot of the latest development. Again, no way to ensure stability.

<docker-tag>	<git-url>	T:<git-tag>
2.4.0 	git://github.com/dotcloud/docker-redis	T:2.4.0
<docker-tag>	<git-url>	B:<git-branch>
zfs		git://github.com/dotcloud/docker	B:zfs-support
<docker-tag>	<git-url>	C:<git-commit-id>
2.2.0 	https://github.com/dotcloud/docker-redis.git C:a4bf8923ee4ec566d3ddc212

The most complete format. docker-brew will fetch data from the provided git repository from the provided reference (if it's a branch, brew will fetch its HEAD). Generated image will be tagged as <docker-tag>. Recommended whenever possible.