{
  config,
  lib,
  ...
}: let
  cfg = config.frajul.gitlab-runner;
in {
  options = {
    frajul.gitlab-runner = {
      enable = lib.mkEnableOption "gitlab-runner";
      secretsFile = lib.mkOption {
        type = lib.types.path;
        description = "A sops encrpyted file containing a 'gitlab_runner_token' secret";
      };
    };
  };

  config = lib.mkIf cfg.enable {
    services.gitlab-runner.enable = true;

    sops.secrets."gitlab_runner_token".sopsFile = cfg.secretsFile;
    services.gitlab-runner.services.default = {
      # File should contain at least these two variables:
      authenticationTokenConfigFile = config.sops.secrets."gitlab_runner_token".path;
      dockerImage = "alpine:latest";
      dockerVolumes = [
        "/var/run/docker.sock:/var/run/docker.sock"
      ];
    };
  };
}