ff234b65ea
Explain difference between 'DIB_OFFLINE' and 'DIB_DEBIAN_USE_DEBOOTSTRAP_CACHE' Those variables are not redundant,they hava different effective ranges. However,some people may be confused about this and reported a bug. So,this difference should be writen in the README file. Closes-Bug: #1506275 Change-Id: Ie5316de41d129bf98781708954f09ef0b2592b53
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1.8 KiB
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43 lines
1.8 KiB
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======
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debian
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======
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Create an image based on Debian. We default to unstable but DIB_RELEASE
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is mapped to any series of Debian.
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Note that the default Debian series is `unstable`, and the default
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mirrors for Debian can be problematic for `unstable`. Because apt does
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not handle changing Packages files well across multiple out of sync
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mirrors, it is recommended that you choose a single mirror of debian,
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and pass it in via `DIB_DISTRIBUTION_MIRROR`.
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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.
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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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