sig_cloud/diskimage-builder
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diskimage-builder/elements/dpkg/README.md
Clark Boylan bab9595524 Use DIB_IMAGE_CACHE in dpkg element 
The dpkg element was hardcoding ~/.cache/image-create as the cache path,
but elements should use DIB_IMAGE_CACHE as the root for the cache to
allow users to override the path. Replace the hardcoded path with one
that is rooted at $DIB_IMAGE_CACHE.

Change-Id: I76030654e7dfc7b7d4dfa87e082c14e7cee479b9
2015-01-13 14:22:10 -08:00

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Provide dpkg specific image building glue.

The ubuntu element needs customisations at the start and end of the image build process that do not apply to RPM distributions, such as using the host machine HTTP proxy when installing packages. These customisations live here, where they can be used by any dpkg based element.

The dpkg specific version of install-packages is also kept here.

Environment Variables

  • DIB_ADD_APT_KEYS: If an extra or updated apt key is needed then define DIB_ADD_APT_KEYS with the path to a folder. Any key files inside will be added to the key ring before any apt-get commands take place.
  • DIB_APT_LOCAL_CACHE: You can use this variable to disable the internal cache of the /var/cache/apt/archives directory by setting it to 0. The default is to bind mount the $DIB_IMAGE_CACHE/apt/$DISTRO_NAME directory in /var/cache/apt/archives, this to cache the .deb files downloaded during the image creation.