diskimage-builder/elements/ubuntu-minimal
Gregory Haynes cd1965f7b7 Allow disto-specific mirror settings
Most of our distros support DIB_DISTRIBUTION_MIRROR for setting the
mirror to be used when building. This has a major downside where if
someone would like to create a static configuration for building various
distro images it cannot set DIB_DISTRIBUTION_MIRROR (think of the case
where we want to run our tests).

By adding support for DIB_$DISTRO_DISTRIBUTION_MIRROR this problem is
resolved.

Change-Id: I92964b17ec3e47cf97e3a3091f054b2a205ac768
2016-12-08 16:02:15 -08:00
..
environment.d Allow disto-specific mirror settings 2016-12-08 16:02:15 -08:00
pre-install.d Split the debootstrap functions into an element 2015-04-26 18:04:59 +00:00
root.d Perform package install outside of debootstrap 2016-11-30 15:16:46 +11:00
test-elements/build-succeeds Add tests for building *-minimal images 2016-08-22 16:53:32 +00:00
element-deps Perform package install outside of debootstrap 2016-11-30 15:16:46 +11:00
element-provides Add minimal ubuntu and centos base elements 2014-12-11 13:27:36 -08:00
package-installs.yaml Perform package install outside of debootstrap 2016-11-30 15:16:46 +11:00
README.rst Explain difference between two envvars 2016-08-25 10:07:29 +08:00

==============
ubuntu-minimal
==============

Note: The ubuntu element is likely what you want unless you really know
you want this one for some reason. The ubuntu element gets a lot more testing
coverage and use.

Create a minimal image based on Ubuntu. We default to trusty but DIB_RELEASE
is mapped to any series of Ubuntu.

If necessary, a custom apt keyring and debootstrap script can be
supplied to the `debootstrap` command via `DIB_APT_KEYRING` and
`DIB_DEBIAN_DEBOOTSTRAP_SCRIPT` respectively. Both options require the
use of absolute rather than relative paths.

Use of this element will also require the tool 'debootstrap' to be
available on your system. It should be available on Ubuntu, Debian,
and Fedora.

The `DIB_OFFLINE` or more specific `DIB_DEBIAN_USE_DEBOOTSTRAP_CACHE`
variables can be set to prefer the use of a pre-cached root filesystem
tarball.

The `DIB_DEBOOTSTRAP_EXTRA_ARGS` environment variable may be used to
pass extra arguments to the debootstrap command used to create the
base filesystem image. If --keyring is is used in `DIB_DEBOOTSTRAP_EXTRA_ARGS`,
it will override `DIB_APT_KEYRING` if that is used as well.

For further information about `DIB_DEBIAN_DEBOOTSTRAP_SCRIPT`,
`DIB_DEBIAN_USE_DEBOOTSTRAP_CACHE` and `DIB_DEBOOTSTRAP_EXTRA_ARGS`
please consult "README.rst" of the debootstrap element.