Add gitea runner image

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

packages/docker/gitea-act-runner-worker/default.nix

@@ -0,0 +1,37 @@
+{ pkgs, ... }:
+let
+  containerPolicy = pkgs.writeTextDir "/etc/containers/policy.json" (
+    builtins.readFile (
+      (pkgs.formats.json { }).generate "policy.json" {
+        default = [ { type = "insecureAcceptAnything"; } ];
+        transports.docker-daemon."" = [ { type = "insecureAcceptAnything"; } ];
+      }
+    )
+  );
+in
+pkgs.dockerTools.buildImage {
+  name = "gitea-act-runner-worker";
+  fromImage = pkgs.docker-image-base;
+
+  copyToRoot = pkgs.buildEnv {
+    name = "root";
+    paths = with pkgs; [
+      git
+      curl
+      jq
+      nix
+      nodejs
+      buildah
+      skopeo
+      containerPolicy
+    ];
+    pathsToLink = [
+      "/bin"
+      "/etc"
+    ];
+  };
+
+  runAsRoot = ''
+    mkdir -p /var/tmp
+  '';
+}

packages/docker/gitea-act-runner/default.nix

@@ -10,16 +10,7 @@ let
   runnerConfig = pkgs.writeTextDir "/etc/gitea-act-runner/config.yaml" (
     builtins.readFile (
       (pkgs.formats.yaml { }).generate "config.yaml" {
-        runner = {
-          file = "/var/lib/gitea-act-runner/registration";
-          capacity = 4;
-          labels = [
-            "ubuntu-latest:docker://catthehacker/ubuntu:act-latest"
-            "ubuntu-22.04:docker://catthehacker/ubuntu:act-22.04"
-            "ubuntu-20.04:docker://catthehacker/ubuntu:act-20.04"
-            "ubuntu-18.04:docker://catthehacker/ubuntu:act-18.04"
-          ];
-        };
+        runner.file = "/var/lib/gitea-act-runner/registration";
         cache.dir = "/tmp/gitea-act-runner/";
         # https://gitea.com/gitea/act_runner/issues/223#issuecomment-743748
         container.docker_host = "-";