docs: deployment guides for EU hosting providers

[Neckript]

Description

Step-by-step deployment guides for popular EU hosting providers.

Providers to cover

• OVH VPS
• Hetzner Cloud
• Raspberry Pi (home hosting)
• Bare metal / dedicated server

[HaarGeroya]

If possible, could you include documentation on how to migrate from an operational Sharkord instance?

In my personal case it's built in docker compose on bare metal.

[Neckript]

Great timing — migration guide from Sharkord to Bullshark is on our radar.
Your use case (Docker Compose on bare metal) will be covered.
We'll include a step-by-step that preserves existing data (/opt/sharkord/data).
Thanks for the feedback!