gitlab: runner up and running

heh

applications/gitlab_runner.nix

@@ -0,0 +1,69 @@
+{ config, pkgs, lib, ... }:
+  with lib;
+  let
+    cfg = config.services.skynet_gitlab_runner;
+  in {
+  imports = [
+
+  ];
+
+  options.services.skynet_gitlab_runner = {
+    enable = mkEnableOption "Skynet Gitlab Runner";
+
+    runner = {
+      name = mkOption {
+        type = types.str;
+      };
+
+      gitlab = mkOption {
+        default = "https://gitlab.skynet.ie";
+        type = types.str;
+      };
+
+      description = mkOption {
+        default = cfg.runner.name;
+        type = types.str;
+      };
+
+      docker = {
+        image = mkOption {
+          default = "alpine:latest";
+          type = types.str;
+        };
+
+        cleanup_dates = mkOption {
+          # https://man.archlinux.org/man/systemd.time.7#CALENDAR_EVENTS
+          # it will use a lot of storage so clear it daily, may change to hourly if required
+          default = "daily";
+          type = types.str;
+        };
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # https://search.nixos.org/options?from=0&size=50&sort=alpha_desc&type=packages&query=services.gitlab-runner.
+
+
+    age.secrets."${cfg.runner.name}".file = ../secrets/gitlab/runners/${cfg.runner.name}.age;
+
+    services.gitlab-runner = {
+      enable = true;
+
+      clear-docker-cache = {
+        enable = true;
+        dates = cfg.runner.docker.cleanup_dates;
+      };
+
+      services = {
+        # might make a function later to have multiple runners, might never need it though
+        "${cfg.runner.name}" = {
+          cloneUrl = cfg.runner.gitlab;
+          description = cfg.runner.description;
+          registrationConfigFile = config.age.secrets."${cfg.runner.name}".path;
+          dockerImage = cfg.runner.docker.image;
+        };
+      };
+    };
+  };
+}