Configuration

Minimal example:

services.container-builder = {
  enable = true;
  cpus = 4;
  memory = "8G";
  maxJobs = 4;
  bridge.enable = true;
};

Common settings to review first:

• hostAlias
• port
• listenAddress
• cpus
• memory
• maxJobs
• bridge.enable
• protocol
• idleShutdown.enable
• idleShutdown.timeoutSeconds
• dns.*
• imageRepository
• nixVersion

The default image is the upstream pinned image:

docker.io/nixos/nix:2.34.6

The container guest writes a minimal nix.conf that uses https://cache.nixos.org/ by default.

Current default behavior to keep in mind:

• bridge.enable = true
• protocol = "ssh-ng"
• hostAlias = "container-builder"
• listenAddress = "127.0.0.1"
• port = 2222