Update things for better & easier dockerization

[uukelele-scratch]

• Add .dockerignore to prevent building sensitive information in the containers
• Change the Dockerfile to Tasks.Dockerfile and add a new dockerfile for mindcraft
• Change the docker-compose to use the new Dockerfile and expose the correct ports and volumes, as well as providing extra_hosts.
• Use volumes settings.js (to allow editing settings on the host), keys.json (to give the container access to keys), profiles to allow profile editing, bots to persist memory.
• Update README.md and minecollab.md with new Dockerfile instructions.
• main.js now uses public_host as true to support Docker (otherwise it threw errors)
• Add SETTINGS_JSON environment override to settings.js.

[mrelmida]

as far as I can say, it looks good.

[Sweaterdog]

I will approve and merge, if The Right and Honourable Dr. Prof. Elmida, Mr. Lord of Dockerized Philosophy and Professor Emeritus of Daemonology approves, I approve.

[uukelele-scratch]

means i am docker level up now