DCS World Server docker and utilities

[Aterfax]

Might be worth mentioning here that the following also exist: https://lutris.net/games/dcs-world-open-beta-dedicated-server/

[Frans Skarman]

Neat! Mind making a PR?

[Aterfax]

Thought I would also add that both the following also now exist:

• https://github.com/Aterfax/DCS-World-Dedicated-Server-Docker
• https://github.com/Aterfax/docker-Sneaklardooon