ci: add CI and rename image to nix-coder-image

.gitlab-ci.yaml

@@ -0,0 +1,4 @@
+include:
+  - project: TECHNOFAB/nix-gitlab-ci
+    ref: main
+    file: gitlab-ci.yml

flake.nix

@@ -82,6 +82,34 @@
             modules = [./nix-kubernetes];
           };
         };
+
+        ci = {
+          stages = ["build" "upload"];
+          jobs = {
+            "build" = {
+              stage = "build";
+              script = [
+                "nix build .#nix-coder-image"
+              ];
+              after_script = [
+                "install -D result dist/nix-coder-image.tar.gz"
+              ];
+              artifacts.paths = ["dist/"];
+            };
+            "upload" = {
+              stage = "upload";
+              needs = ["build"];
+              deps = [pkgs.skopeo];
+              script = [
+                ''
+                  skopeo --insecure-policy copy --dest-creds "''${CI_REGISTRY_USER}:''${CI_REGISTRY_PASSWORD}" --tmpdir /tmp \
+                    "docker-archive:dist/nix-coder-image.tar.gz" \
+                    "docker://''${CI_REGISTRY_IMAGE}/nix-coder-image:''${CI_COMMIT_SHORT_SHA}"
+                ''
+              ];
+            };
+          };
+        };
       };
     };
 

nix-kubernetes/kubernetes.nix

@@ -32,7 +32,7 @@
         container = [
           {
             name = "workspace";
-            image = "registry.gitlab.com/technofab/coder-templates/coder-workspace:\${data.coder_parameter.image_tag.value}";
+            image = "registry.gitlab.com/technofab/coder-templates/nix-coder-image:\${data.coder_parameter.image_tag.value}";
             command = ["/bin/sh" "-c" "\${resource.coder_agent.coder.init_script}"];
             env = [
               {