ISO build fails with 'xz: executable not found in $PATH'

[Dmitry Nikishov]

Env:
- Ubuntu 14.04
- environment set up with 'prepare-build-env.sh'
- building from master branch of github.com/stackforge/fuel-* repos
- executed 'make iso' with all the default settings

ISO build fails with:
tar xf /tmp/fuel-main/build/artifacts/ubuntu_target_images.tar -C /tmp/fuel-main/build/iso/isoroot/targetimages
touch /tmp/fuel-main/build/iso/isoroot-image.done
find /tmp/fuel-main/local_mirror/docker/ -regex '.*xz' | xargs -n1 sudo docker load -i
2014/12/09 07:38:40 Error: Untar exit status 1 exec: "xz": executable file not found in $PATH
2014/12/09 07:38:41 Error: Untar exit status 1 exec: "xz": executable file not found in $PATH
2014/12/09 07:38:41 Error: Untar exit status 1 exec: "xz": executable file not found in $PATH
make: *** [/tmp/fuel-main/build/docker/base-images.done] Error 123

This seems to be an issue associated with changes introduced in docker 1.3.2: https://github.com/docker/docker/issues/9327
'prepare-build-env.sh' installs 1.3.2 by default (latest available in http://mirror.yandex.ru/mirrors/docker).
After manual downgrade to docker 1.3.1, build process has been able to proceed.

[Alexander Kupko (akupko)]

Here is a workaround: https://blogs.oracle.com/brunoborges/entry/oracle_linux_docker_base_image
It proposes to uncompress the archive first and then load a tarball file.

Please note, 1.4.1 version of docker (default in Ubuntu 14.04) does not work as well due to another bug: https://github.com/docker/docker/issues/4036