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153 lines
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153 lines
4.6 KiB
ReStructuredText
:title: Setting Up a Dev Environment
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:description: Guides on how to contribute to docker
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:keywords: Docker, documentation, developers, contributing, dev environment
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Setting Up a Dev Environment
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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To make it easier to contribute to Docker, we provide a standard
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development environment. It is important that the same environment be
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used for all tests, builds and releases. The standard development
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environment defines all build dependencies: system libraries and
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binaries, go environment, go dependencies, etc.
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Step 1: Install Docker
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----------------------
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Docker's build environment itself is a Docker container, so the first
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step is to install Docker on your system.
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You can follow the `install instructions most relevant to your system
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<https://docs.docker.io/en/latest/installation/>`_. Make sure you have
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a working, up-to-date docker installation, then continue to the next
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step.
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Step 2: Check out the Source
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----------------------------
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.. code-block:: bash
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git clone http://git@github.com/dotcloud/docker
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cd docker
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To checkout a different revision just use ``git checkout`` with the name of branch or revision number.
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Step 3: Build the Environment
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-----------------------------
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This following command will build a development environment using the Dockerfile in the current directory. Essentially, it will install all the build and runtime dependencies necessary to build and test Docker. This command will take some time to complete when you first execute it.
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.. code-block:: bash
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sudo make build
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If the build is successful, congratulations! You have produced a clean build of
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docker, neatly encapsulated in a standard build environment.
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Step 4: Build the Docker Binary
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-------------------------------
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To create the Docker binary, run this command:
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.. code-block:: bash
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sudo make binary
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This will create the Docker binary in ``./bundles/<version>-dev/binary/``
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Using your built Docker binary
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The binary is available outside the container in the directory
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``./bundles/<version>-dev/binary/``. You can swap your host docker executable
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with this binary for live testing - for example, on ubuntu:
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.. code-block:: bash
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sudo service docker stop ; sudo cp $(which docker) $(which docker)_ ; sudo cp ./bundles/<version>-dev/binary/docker-<version>-dev $(which docker);sudo service docker start
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.. note:: Its safer to run the tests below before swapping your hosts docker binary.
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Step 5: Run the Tests
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---------------------
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To execute the test cases, run this command:
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.. code-block:: bash
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sudo make test
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Note: if you're running the tests in vagrant, you need to specify a dns entry in
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the command (either edit the Makefile, or run the step manually):
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.. code-block:: bash
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sudo docker run -dns 8.8.8.8 -privileged -v `pwd`:/go/src/github.com/dotcloud/docker docker hack/make.sh test
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If the test are successful then the tail of the output should look something like this
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.. code-block:: bash
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--- PASS: TestWriteBroadcaster (0.00 seconds)
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=== RUN TestRaceWriteBroadcaster
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--- PASS: TestRaceWriteBroadcaster (0.00 seconds)
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=== RUN TestTruncIndex
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--- PASS: TestTruncIndex (0.00 seconds)
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=== RUN TestCompareKernelVersion
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--- PASS: TestCompareKernelVersion (0.00 seconds)
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=== RUN TestHumanSize
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--- PASS: TestHumanSize (0.00 seconds)
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=== RUN TestParseHost
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--- PASS: TestParseHost (0.00 seconds)
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=== RUN TestParseRepositoryTag
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--- PASS: TestParseRepositoryTag (0.00 seconds)
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=== RUN TestGetResolvConf
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--- PASS: TestGetResolvConf (0.00 seconds)
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=== RUN TestCheckLocalDns
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--- PASS: TestCheckLocalDns (0.00 seconds)
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=== RUN TestParseRelease
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--- PASS: TestParseRelease (0.00 seconds)
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=== RUN TestDependencyGraphCircular
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--- PASS: TestDependencyGraphCircular (0.00 seconds)
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=== RUN TestDependencyGraph
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--- PASS: TestDependencyGraph (0.00 seconds)
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PASS
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ok github.com/dotcloud/docker/utils 0.017s
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Step 6: Use Docker
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-------------------
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You can run an interactive session in the newly built container:
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.. code-block:: bash
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sudo make shell
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# type 'exit' or Ctrl-D to exit
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Extra Step: Build and view the Documentation
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--------------------------------------------
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If you want to read the documentation from a local website, or are making changes
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to it, you can build the documentation and then serve it by:
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.. code-block:: bash
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sudo make docs
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# when its done, you can point your browser to http://yourdockerhost:8000
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# type Ctrl-C to exit
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**Need More Help?**
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If you need more help then hop on to the `#docker-dev IRC channel <irc://chat.freenode.net#docker-dev>`_ or post a message on the `Docker developer mailing list <https://groups.google.com/d/forum/docker-dev>`_.
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