migrate gitops-demo to generic chart

apps/gitops-demo.yaml

@@ -1,10 +1,15 @@
-# A child Application in the app-of-apps tree. ArgoCD's root app finds this file
-# and creates this Application, which in turn syncs gitops-demo/dev into the
-# cluster. To add another service, copy this file and change name + path.
+# gitops-demo child Application — now Helm-based, using the shared chart.
 #
-# NOTE: replace REPLACE_WITH_MANIFEST_REPO_URL with this repo's real HTTPS URL
-# (see README) — child Applications can't be templated by our shell scripts
-# because ArgoCD reads them straight from git.
+# MULTI-SOURCE explained: ArgoCD lets an Application pull from more than one
+# source. We use two, BOTH pointing at this same manifest repo:
+#   1. ref: values  — exposes the repo as "$values" so we can reference a file
+#                     from it (the per-service values.yaml).
+#   2. path: charts/app  — the generic chart, rendered with that values file.
+# This keeps the chart shared and each service's values in its own clean file,
+# instead of duplicating manifests or inlining values here.
+#
+# NOTE: replace REPLACE_WITH_MANIFEST_REPO_URL in BOTH sources with the real
+# repo URL (same as before — ArgoCD reads these straight from git).
 apiVersion: argoproj.io/v1alpha1
 kind: Application
 metadata:
@@ -12,13 +17,19 @@ metadata:
   namespace: argocd
 spec:
   project: default
-  source:
-    repoURL: https://gitea.lgkentang.com/darren.maverick/k3s-manifests.git
-    targetRevision: HEAD
-    path: gitops-demo/dev
+  sources:
+    - repoURL: https://gitea.lgkentang.com/darren.maverick/k3s-manifests.git
+      targetRevision: HEAD
+      ref: values
+    - repoURL: https://gitea.lgkentang.com/darren.maverick/k3s-manifests.git
+      targetRevision: HEAD
+      path: charts/app
+      helm:
+        valueFiles:
+          - $values/gitops-demo/dev/values.yaml
   destination:
     server: https://kubernetes.default.svc
-    namespace: dev          # per-environment namespace convention
+    namespace: dev
   syncPolicy:
     automated:
       prune: true