Update Guide Quay

Guide-Quay.md

@@ -1,4 +1,4 @@
-# Deploying Quay Instances on OpenShift
+# Deploying Quay Instances on OpenShift [Feature WIP]
 
 ## Table of Contents
 - [Overview](#overview)
@@ -66,7 +66,57 @@ Please follow the [official guide](https://docs.redhat.com/en/documentation/red_
 
 ## Advanced Installation
 
-For advanced installations, refer to the official documentation:  
+It is also possible to pre-create a config and refer to it before installing quay.
+
+First, create the yaml file with the desired modifications, for example:
+
+```yaml
+FEATURE_USER_INITIALIZE: true
+```
+
+Then, create it in your OpenShift project as a secret:
+
+```
+oc create secret generic --from-file config.yaml=../config.yaml config-bundle-secret
+```
+
+Afterwards, refer to it from your Quay Registry definition manifest:
+```yaml
+kind: QuayRegistry
+apiVersion: quay.redhat.com/v1
+metadata:
+  name: <<[your-quay-instance-name]>>
+  namespace: <<[your-namespace]>>
+spec:
+  configBundleSecret: config-bundle-secret
+  components:
+    - kind: clair
+      managed: true
+    - kind: postgres
+      managed: true
+    - kind: objectstorage
+      managed: true
+    - kind: redis
+      managed: true
+    - kind: horizontalpodautoscaler
+      managed: true
+    - kind: route
+      managed: true
+    - kind: mirror
+      managed: true
+    - kind: monitoring
+      managed: true
+    - kind: tls
+      managed: true
+    - kind: quay
+      managed: true
+    - kind: clairpostgres
+      managed: true
+```
+
+After installation, a new secret will be created named that merges the defined config with the default config values: [quay-registry-name]-quay-config-secret-[id] 
+
+For more information on advanced installations, refer to the official documentation:  
 [Deploying Quay Registry](https://docs.redhat.com/en/documentation/red_hat_quay/3.15/html/deploying_the_red_hat_quay_operator_on_openshift_container_platform/deploying-quay-registry)
 
 ## References