VirtualBox-make

Usage

Before usage, configuation file config.conf has to be prepared from the example file config.conf.example.

In order for the guest VMS to function properly, the following steps have to be taken (all modifications on guest VMS only):

Forbid installation from the CD by commenting out a following line in the /etc/apt/sources.list:
```
deb cdrom:[some name]/ stable main
```
Create the executing user (with home folder and /bin/bash Shell);
Install sudo (if not already present);
Install openssh-server on the guest machine and configure it to accept passwordless connections of the executing user;
(optional) Allow passwordless execution of sudo apt-get install by adding the following line to /etc/sudoers:
```
tester            ALL = (ALL) NOPASSWD: /usr/bin/apt-get
```
This may be neccessary in case if tester has to install dependencies.

System uses a trick to evade SSH key checking as described here: http://linuxcommando.blogspot.ch/2008/10/how-to-disable-ssh-host-key-checking.html. In addition to this, the system creates and deletes a VMS snapshot for each run.

Port-forwarding for SSH is set up automatically after starting the guest and is removed right after shutting it down as described here: http://stackoverflow.com/questions/5906441/how-to-ssh-to-a-virtualbox-guest-externally-through-a-host.