Use local NTP servers

Remove driver update script

Update e1000e network driver to support Dell 7060

Add ubuntu 18.04 support

Update README with BIOS configuration

Force HWE kernel and xserver installation

Fix UEFI booting

Moved to HWE iso base image

Provide an initial implementation

The parititioner seems to be keen to install over the USB stick in some
case. Add a large hammer which disables installing on any USB attached
storage.

Add a basic README to the repository and move the original README to a
separate file.

Add CircleCI configuration to build the images on each commit and to
deploy them to GitHub pages when merged to master.

Select the lubuntu-desktop task when installing to ensure that we end up
with a graphical interface. The agent ansible requires this because it
makes use of some desktop-y things when initially gathering facts.

Add an initial user, galicaster, and set auto-login. The galicaster user
has a disabled password.

Use an Ubuntu mirror which is likely to be connected to a nearer network
than archive.ubuntu.com.

The original example preseed keps 25% of the disk unallocated. We need
all the disk we can get on a capture agent so make sure to use 100% of
the disk.

On some machines we have observed large delays getting an IP over DHCP.
Increase the timeout to two minutes (120) seconds.

Add a basic packaging of the build scripts inside a Docker container.
The ISO images may now be generated using a single command:

  docker run --rm -v $PWD/images:/images $(docker build -q .)

The initnial SSH keys are copied from a deploy-keys.pub file which has
been initialised with the DevOps deploy keys for lecture capture.

We have observed some machines (e.g. vision.csi) which cannot boot from
the ISO generated by xorriso. Move over to using the venerable mkisofs
and isohybrid.

The build disk script is currently not used and we do not have plans to
use it.

For the moment, our lecture capture agents are all 16.04 boxen. Remove
the configuration for later Ubuntus as we will not be keeping them up to
date.