Update build pipeline to reduce image size

devenv.nix

@@ -0,0 +1,19 @@
+{ pkgs, ... }: {
+  languages = {
+    javascript = {
+      enable = true;
+      package = pkgs.nodejs_22;
+      yarn = {
+        enable = true;
+        package = pkgs.yarn-berry;
+      };
+    };
+  };
+  tasks."news:install" = {
+    exec = ''yarn install'';
+    before = ["news:build"];
+  };
+  tasks."news:build" = {
+    exec = ''yarn build'';
+  };
+}