Add Dockerfile and launch script

[dustinfreeman]

I hope this docker image is useful to others! Would have saved me a couple days of trial and error work fighting competing dependencies

I've tested this Dockerfile so far as it can run bash ./scripts/test_1024_g1.sh. I have a single GPU setup so I can't test any multi-GPU features.

If I encounter further issues as I use vid2vid, I'll update this pull request.

[dustinfreeman]

Update: this Dockerfile does not install CUDA drivers correctly on a Google Compute server. Working on it and will update when I have a solution

[dustinfreeman]

I have updated the pull request after extensive testing on a fresh Ubuntu 16.04 LTS instance offered by Google Cloud Compute.

docker/pre_docker_install.sh is meant to be run before the docker image is built, to install prerequisites on the base OS. It seems nvidia drivers need to be installed outside the docker image.

[tcwang0509]

Thanks for your kindness to provide the scripts! We're actually not allowed to take pull requests outside the company. But I've integrated your dockerfiles into the main branch. Cheers!

[dustinfreeman]

Understood, though that is unfortunate - I'm still iterating on this (e.g. I think the model downloading is not robust), and will update this pull request as I debug.