Add configuration for a new VPS named Giga

[thanhnguyen2187]

Currently, my self-hosted applications are deployed manually on a VPS that use Ubuntu 20.04. I want to use NixOS instead, and bought another VPS for that. On that VPS, nixos-infect was installed, but there are works needed to fully migrate from the old VPS to the new one.

[thanhnguyen2187]

Some questions to be figured out:

• Even though NixOS was ready on machine B, we need manual steps to add a non-root user. Should this be automated somehow?
• The initialization also requires a "fixed" SSH key (users.users.root.openssh.authorizedKeys.keys=...) to be login-able, which is cumbersome. Is there a better way to do this?

[thanhnguyen2187]

Migration checklist:

• Islet
• qBitTorrent
• Files
• Feeds
• Analytics: this was not needed anymore after we migrated Islet to Cloudflare Pages
  • Postgres?
• Esoterica: to be considered
• Boards: I did not use this that much