diskimage-builder/diskimage_builder/elements/ubuntu-minimal
Ian Wienand 12b60c4088 Mount /sys RO
As noted inline, this works around potential issues by being a strong
indication you are in a container (e.g. [1]).  Since nothing should be
changing anything on the host/build system, this is a generically
safer way to operate.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1975588

Change-Id: Ic6802c4ffc2e825f129af10717860a2d1770fe80
2021-07-05 11:45:02 +10:00
..
environment.d Add 'DIB_UBUNTU_MIRROR_DISTS' to ubuntu-minimal 2021-01-27 10:32:49 +02:00
root.d Mount /sys RO 2021-07-05 11:45:02 +10:00
test-elements ubuntu-minimal: Add Ubuntu Focal test build 2020-05-21 14:03:54 +10:00
README.rst Add 'DIB_UBUNTU_MIRROR_DISTS' to ubuntu-minimal 2021-01-27 10:32:49 +02:00
element-deps Merge branch 'master' into merge-branch 2017-02-09 13:35:53 +11:00
element-provides Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
package-installs.yaml Revert "Revert "ubuntu-minimal : only install 16.04 HWE kernel on xenial"" 2020-05-27 06:18:02 +10:00

README.rst

ubuntu-minimal

The ubuntu-minimal element uses debootstrap for generating a minimal image. In contrast the ubuntu element uses the cloud-image as the initial base.

By default this element creates the latest LTS release. The exact setting can be found in the element's environment.d directory in the variable DIB_RELEASE. If a different release of Ubuntu should be created, the variable DIB_RELEASE can be set appropriately.

Note that this element installs systemd-sysv as the init system for 18.04+.

Environment Variables

DIB_UBUNTU_KERNEL:
Required

No

Default

linux-image-generic

Description

Specifies the kernel meta package to install in the image.

Example

DIB_UBUNTU_KERNEL=linux-image-kvm

Options

linux-image-generic, linux-image-kvm, linux-image-virtual

Notes

The element must know about the package, otherwise it will select the default.

DIB_UBUNTU_MIRROR_DISTS:
Required

No

Default

updates,security,backports

Description

Allow to manage 'dists' repos

Example

DIB_UBUNTU_MIRROR_DISTS=updates,security

Notes

For some deployment, is may be required to disable backportetc packages integration.