79 lines
3.2 KiB
ReStructuredText
79 lines
3.2 KiB
ReStructuredText
==============
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debian-minimal
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==============
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Create a minimal image based on Debian. We default to unstable but
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``DIB_RELEASE`` can be set to any series of Debian.
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There are two ways to configure apt-sources:
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1. Using the standard way of defining the default, backports, updates
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and security repositories is the default. In this case you can
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overwrite the two environment variables to adapt the behavior:
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* ``DIB_DISTRIBUTION_MIRROR``: the mirror to use (default:
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`<http://ftp.us.debian.org/debian>`__)
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* ``DIB_DEBIAN_COMPONENTS``: (default: ``main``) a comma
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separated list of components. For Debian this can be
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e.g. ``main,contrib,non-free``.
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Note it is not recommended to use
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`<http://httpredir.debian.org/>`__ for ``DIB_DISTRIBUTION_MIRROR``
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due to how unreliable it is. Be sure to select a mirror from the
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official mirror list at `<https://www.debian.org/mirror/list>`__
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By default only the ``main`` component is used. If
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``DIB_DEBIAN_COMPONENTS`` (comma separated) from the
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``debootstrap`` element has been set, that list of components will
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be used instead.
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Backports, updates and security are included unless ``DIB_RELEASE``
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is ``unstable``.
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2. Complete configuration given in the variable ``DIB_APT_SOURCES_CONF``.
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Each line contains exactly one entry for the sources.list.d
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directory. The first word must be the logical name (which is used
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as file name with ``.list`` automatically appended), followed by a
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colon ``:``, followed by the complete repository specification.
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.. code-block:: bash
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DIB_APT_SOURCES_CONF=\
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"default:deb http://10.0.0.10/ stretch main contrib
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mysecurity:deb http://10.0.0.10/ stretch-security main contrib"
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If necessary, a custom apt keyring and debootstrap script can be
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supplied to the ``debootstrap`` command via ``DIB_APT_KEYRING`` and
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``DIB_DEBIAN_DEBOOTSTRAP_SCRIPT`` respectively. Both options require the
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use of absolute rather than relative paths.
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Use of this element will also require the tool 'debootstrap' to be
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available on your system. It should be available on Ubuntu, Debian,
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and Fedora. It is also recommended that the 'debian-keyring' package
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be installed.
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The ``DIB_OFFLINE`` or more specific ``DIB_DEBIAN_USE_DEBOOTSTRAP_CACHE``
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variables can be set to prefer the use of a pre-cached root filesystem
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tarball.
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The ``DIB_DEBOOTSTRAP_EXTRA_ARGS`` environment variable may be used to
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pass extra arguments to the debootstrap command used to create the
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base filesystem image. If --keyring is is used in ``DIB_DEBOOTSTRAP_EXTRA_ARGS``,
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it will override ``DIB_APT_KEYRING`` if that is used as well.
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For further information about ``DIB_DEBIAN_DEBOOTSTRAP_SCRIPT`` ,
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``DIB_DEBIAN_USE_DEBOOTSTRAP_CACHE`` and ``DIB_DEBOOTSTRAP_EXTRA_ARGS``
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please consult "README.rst" of the debootstrap element.
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-------------------
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Note on ARM systems
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-------------------
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Because there is not a one-to-one mapping of ``ARCH`` to a kernel package, if
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you are building an image for ARM on debian, you need to specify which kernel
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you want in the environment variable ``DIB_ARM_KERNEL``. For instance, if you want
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the ``linux-image-mx5`` package installed, set ``DIB_ARM_KERNEL`` to ``mx5``.
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.. element_deps::
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