feat: Hack Night Miniserver

[helmturner]

Relying on the public WiFi at our meetup venue has been... not good. It often takes at least half of the event for attendees to download dependencies or other resources for the night—or worse, they never get off the ground at all.

We want attendees to have all of the resources they need to get off the ground quickly. Using Docker has been a good start, but even downloading prebuilt images has become a bottleneck.

We hope to solve the issue by spinning up a simple, portable mini-server to make resources available over a LAN. This could either be a LAN managed by the server itself or the venue's public wifi (if their router doesn't complicate things, which I expect it would).

Possible Features:

• Docker image registry
• Docker host
• File Server

Unless there's something that @deino475 thinks would be useful for the March Terraform Hack Night, I'll go ahead and start with the Docker registry.