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lets talk about the other way to make base images

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Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
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Sven Dowideit 2014-02-20 13:49:15 +10:00
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23
docs/sources/articles/baseimages.rst
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@ -13,8 +13,8 @@ The specific process will depend heavily on the Linux distribution you
want to package. We have some examples below, and you are encouraged want to package. We have some examples below, and you are encouraged
to submit pull requests to contribute new ones. to submit pull requests to contribute new ones.
Getting Started Create a full image using tar
............... .............................
In general, you'll want to start with a working machine that is In general, you'll want to start with a working machine that is
running the distribution you'd like to package as a base image, though running the distribution you'd like to package as a base image, though
@ -44,3 +44,22 @@ Docker GitHub Repo:
<https://github.com/dotcloud/docker/blob/master/contrib/mkimage-yum.sh>`_ <https://github.com/dotcloud/docker/blob/master/contrib/mkimage-yum.sh>`_
* `Debian / Ubuntu * `Debian / Ubuntu
<https://github.com/dotcloud/docker/blob/master/contrib/mkimage-debootstrap.sh>`_ <https://github.com/dotcloud/docker/blob/master/contrib/mkimage-debootstrap.sh>`_
Creating a simple base image using ``scratch``
..............................................
There is a special repository in the Docker registry called ``scratch``, which
was created using an empty tar file::
$ tar cv --files-from /dev/null | docker import - scratch
which you can ``docker pull``. You can then use that image to base your new
minimal containers ``FROM``::
FROM scratch
ADD true-asm /true
CMD ["/true"]
The Dockerfile above is from extremely minimal image -
`tianon/true <https://github.com/tianon/dockerfiles/tree/master/true>`_.