Hercules CI's Cachix config

[airone01]

HerculesCI on cetus does not find airone01 cache

Cache not found airone01

This is probably because the configuration of this snippet

flake/stars/srv/hercules.nix

Lines 27 to 32 in 77ee8ab

	"hercules-ci-agent-binary-caches.json" = {
	content = config.sops.placeholder."binaryCaches";
	owner = config.users.users.hercules-ci-agent.name;
	group = config.users.users.hercules-ci-agent.group;
	mode = "0400";
	};

Here some custom JSON should probably be used instead for clarity instead of putting the whole JSON file in a secret.

From https://github.com/Mic92/sops-nix?tab=readme-ov-file#templates:

Create a template for your configuration file and utilize the placeholder where you'd like the secret to be inserted. During the activation phase, sops-nix will substitute the placeholder with the actual secret content.

{
  sops.templates."your-config-with-secrets.toml".content = ''
    password = "${config.sops.placeholder.your-secret}"
  '';
}