Make build Env. for Golang and zmq in Chroot

https://github.com/doohee323/buildGoInChroot

When you need to build Golang app. in different ubuntu version, you can use chroot. I made it for the usecase. It makes chroot environment and a builds debian file. And I made a lucid with vagrant, and installed below 3 ubuntu version debians in it. Since ZMQ library is needed for this app, only lucid debian can run in lucid VM.

Required

    1. install chroot
        apt-get install dchroot
        apt-get install debootstrap

    2. edit chroot configuration
        vi /etc/schroot/schroot.conf

        [precise]
        description=Ubuntu precise
        location=~/chroot/precise
        priority=3
        users=hello
        group=hello
        root-groups=root

        [lucid]
        description=Ubuntu lucid
        location=~/chroot/lucid
        priority=3
        users=hello
        group=hello
        root-groups=root

        [trusty]
        description=Ubuntu trusty
        location=~/chroot/trusty
        priority=3
        users=hello
        group=hello
        root-groups=root

How to run

    $ bash chroot.sh lucid 1.0
        - 1st arg: ubuntu version precise / lucid / trusty ...
        - 2nd arg: want to build version
    $ bash chroot.sh precise 1.0
    $ bash chroot.sh trusty 1.0

Verify in lucid

    - install vagrant 4.3
    https://www.virtualbox.org/wiki/Download_Old_Builds_4_3
    - add lucid in vagrant
    vagrant box add lucid64 http://files.vagrantup.com/lucid64.box
    - run vm
    vagrant up
    vagrant@hello:/vagrant$ hello server

    - open another terminal and run hello with client argument.
    vagrant ssh
    vagrant@hello:/vagrant$ hello client
    => it works!

    - but When you install hello_precise.deb in lucid, you'll get this error! 
    dpkg -i hello_precise.deb
    vagrant@hello:/vagrant$ hello server
    => hello: /lib/libc.so.6: version `GLIBC_2.14' not found (required by hello)