Update README.md

README.md

@@ -20,8 +20,8 @@ This is the directory structure
 * `/kubernetes` - Kubernetes files
 * `/kubernetes/helm` - Chart Directory. Refer to https://github.com/kubernetes/helm/blob/master/docs/charts.md#the-chart-file-structure 
 * `/kubernetes/yaml` - Useful for tests, but helm is a more flexible approach
-
-# Requirements
+# Introduction
+# Prerequisites
 
 * Kubernetes cluster
 
@@ -59,4 +59,18 @@ docker pull gitlab.scientificnet.org:4567/commul/dspace/<my_image>:<my tag>
 ```console
 docker build -t gitlab.scientificnet.org:4567/commul/dspace/<my_image>:<my tag> -f Dockerfile.XX .
 docker push gitlab.scientificnet.org:4567/commul/dspace/<my_image>:<my tag>
+```
+
+# Installation
+## PostgreSQL
+To install PostgreSQL, we need some passwords, so we need Kubernetes secrets
+
+```console
+$ kubectl -n dspace-dev create -f postgresql-secret.yaml 
+secret "dspace-postgresql" created
+
+$ kubectl -n dspace-dev get secrets
+NAME                  TYPE                                  DATA      AGE
+default-token-c1pd4   kubernetes.io/service-account-token   3         4d
+dspace-postgresql     Opaque                                1         18s
 ```
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