Add ingress-nginx

apps/ingress-nginx/Chart.yaml

@@ -0,0 +1,19 @@
+# An "umbrella" chart, same pattern as apps/metallb/ and apps/longhorn/:
+# declares a dependency on the upstream ingress-nginx chart. Argo CD detects
+# this as a Helm source because a Chart.yaml exists at this path.
+#
+# See docs/11-ingress.md for why this exists: one shared LoadBalancer
+# address routing many hostnames, instead of every app needing its own
+# MetalLB address.
+apiVersion: v2
+name: ingress-nginx-app
+description: Installs ingress-nginx, routing many hostnames through one shared LoadBalancer address
+version: 0.1.0
+dependencies:
+  - name: ingress-nginx
+    # A version range rather than an exact pin, so this doesn't silently go
+    # stale. Check https://artifacthub.io/packages/helm/ingress-nginx/ingress-nginx
+    # for the current release and pin an exact version for a fully
+    # reproducible install.
+    version: ">=4.11.0"
+    repository: https://kubernetes.github.io/ingress-nginx