fix(univention-management-stack): Configure openDesk branding in frontend chart

helmfile/apps/univention-management-stack/values-portal-frontend.gotmpl

@@ -25,6 +25,61 @@ extraIngresses:
       enabled: {{ .Values.ingress.tls.enabled }}
       secretName: {{ .Values.ingress.tls.secretName | quote }}
 
+  # See "extraVolumeMounts" below
+  custom-favicon:
+    enabled: true
+    annotations:
+      nginx.org/mergeable-ingress-type: "minion"
+    paths:
+      - pathType: Exact
+        path: /favicon.ico
+    tls: {}
+
+  # See "extraVolumeMounts" below
+  custom-branding:
+    enabled: true
+    annotations:
+      nginx.ingress.kubernetes.io/configuration-snippet: |
+        rewrite ^/univention/portal(/.*)$ $1 break;
+      nginx.org/location-snippets: |
+        rewrite ^/univention/portal(/.*)$ $1 break;
+      nginx.org/mergeable-ingress-type: "minion"
+    paths:
+      # This relies on the correct implementation of the matching for paths of
+      # type "Prefix" since "/univention/portal/icons/entries/" is owned by
+      # store-dav.
+      # See: https://kubernetes.io/docs/concepts/services-networking/ingress/#multiple-matches
+      - pathType: Prefix
+        path: /univention/portal/icons/
+      - pathType: Prefix
+        path: /univention/portal/custom/
+    tls: {}
+
+extraVolumes:
+  - name: "opendesk-branding"
+    configMap:
+      name: "ums-stack-data-swp-branding"
+
+extraVolumeMounts:
+  - name: "opendesk-branding"
+    mountPath: "/var/www/html/favicon.ico"
+    subPath: "favicon.ico"
+  - name: "opendesk-branding"
+    mountPath: "/var/www/html/css/custom.css"
+    subPath: "custom.css"
+  - name: "opendesk-branding"
+    mountPath: "/var/www/html/icons/logo.svg"
+    subPath: "logo.svg"
+  - name: "opendesk-branding"
+    mountPath: "/var/www/html/icons/logo_small_border.svg"
+    subPath: "logo_small_border.svg"
+  - name: "opendesk-branding"
+    mountPath: "/var/www/html/custom/portal_background_image.png"
+    subPath: "portal_background_image.png"
+  - name: "opendesk-branding"
+    mountPath: "/var/www/html/custom/portal_background_image.svg"
+    subPath: "portal_background_image.svg"
+
 resources:
   {{ .Values.resources.umsPortalFrontend | toYaml | nindent 2 }}
 ...