github.com/circular-dark/docker@v1.7.0/docs/articles/baseimages.md (about)

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     3  title = "Create a base image"
     4  description = "How to create base images"
     5  keywords = ["Examples, Usage, base image, docker, documentation,  examples"]
     6  [menu.main]
     7  parent = "smn_images"
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    10  
    11  # Create a base image
    12  
    13  So you want to create your own [*Base Image*](
    14  /terms/image/#base-image)? Great!
    15  
    16  The specific process will depend heavily on the Linux distribution you
    17  want to package. We have some examples below, and you are encouraged to
    18  submit pull requests to contribute new ones.
    19  
    20  ## Create a full image using tar
    21  
    22  In general, you'll want to start with a working machine that is running
    23  the distribution you'd like to package as a base image, though that is
    24  not required for some tools like Debian's
    25  [Debootstrap](https://wiki.debian.org/Debootstrap), which you can also
    26  use to build Ubuntu images.
    27  
    28  It can be as simple as this to create an Ubuntu base image:
    29  
    30      $ sudo debootstrap raring raring > /dev/null
    31      $ sudo tar -C raring -c . | docker import - raring
    32      a29c15f1bf7a
    33      $ docker run raring cat /etc/lsb-release
    34      DISTRIB_ID=Ubuntu
    35      DISTRIB_RELEASE=13.04
    36      DISTRIB_CODENAME=raring
    37      DISTRIB_DESCRIPTION="Ubuntu 13.04"
    38  
    39  There are more example scripts for creating base images in the Docker
    40  GitHub Repo:
    41  
    42   - [BusyBox](https://github.com/docker/docker/blob/master/contrib/mkimage-busybox.sh)
    43   - CentOS / Scientific Linux CERN (SLC) [on Debian/Ubuntu](
    44     https://github.com/docker/docker/blob/master/contrib/mkimage-rinse.sh) or
    45     [on CentOS/RHEL/SLC/etc.](
    46     https://github.com/docker/docker/blob/master/contrib/mkimage-yum.sh)
    47   - [Debian / Ubuntu](
    48     https://github.com/docker/docker/blob/master/contrib/mkimage-debootstrap.sh)
    49  
    50  ## Creating a simple base image using `scratch`
    51  
    52  There is a special repository in the Docker registry called `scratch`, which
    53  was created using an empty tar file:
    54  
    55      $ tar cv --files-from /dev/null | docker import - scratch
    56  
    57  which you can `docker pull`. You can then use that
    58  image to base your new minimal containers `FROM`:
    59  
    60      FROM scratch
    61      COPY true-asm /true
    62      CMD ["/true"]
    63  
    64  The `Dockerfile` above is from an extremely minimal image - [tianon/true](
    65  https://github.com/tianon/dockerfiles/tree/master/true).
    66  
    67  ## More resources
    68  
    69  There are lots more resources available to help you write your 'Dockerfile`.
    70  
    71  * There's a [complete guide to all the instructions](/reference/builder/) available for use in a `Dockerfile` in the reference section.
    72  * To help you write a clear, readable, maintainable `Dockerfile`, we've also
    73  written a [`Dockerfile` Best Practices guide](/articles/dockerfile_best-practices).
    74  * If your goal is to create a new Official Repository, be sure to read up on Docker's [Official Repositories](/docker-hub/official_repos/).