support ubuntu

[eighthave]

Its possible to also install Ubuntu using cdebootstrap, but there might be some little details where things are different from Debian. For example, Ubuntu uses upstart as its init system, while Debian was using SysV and is switching to systemd in jessie.

Here's one Ubuntu detail from DebianKit's andromize-lxde package:

        # Adapt upstart jobs to chrooted environments
        dpkg-divert --local --rename --add /sbin/initctl
        ln -sf /bin/true /sbin/initctl

[eighthave]

Ubuntu is not really well supported by cdebootstrap or debootstrap since those are both Debian tools which Ubuntu has not really adopted. For supporting Ubuntu, I think a better approach is to skip cdebootstrap altogether and instead download and install the ubuntu-core tarball.

Then the GPG verification process will also be different. It'll be something like this (totally untested):

wget http://cdimage.ubuntu.com/ubuntu-core/releases/12.04/release/ubuntu-core-12.04.5-core-armhf.tar.gz
wget http://cdimage.ubuntu.com/ubuntu-core/releases/12.04/release/SHA256SUMS.gpg
wget http://cdimage.ubuntu.com/ubuntu-core/releases/12.04/release/SHA256SUMS
gpgv SHA256SUMS.gpg SHA256SUMS
grep ubuntu-core-12.04.5-core-armhf.tar.gz SHA256SUMS > ubuntu-core-12.04.5-core-armhf.tar.gz.sha256
sha256sum -c ubuntu-core-12.04.5-core-armhf.tar.gz.sha256

[SDkie]

ya I was facing issue while trying cdebootstrap with Ubuntu precise. @eighthave: I have sent an email about that.