Update README-NGINX.md

Author: mmouly

platform/eks/README-NGINX.md

@@ -38,8 +38,23 @@ You can then go back to the [main documentation](README.md#2-prepare-your-enviro
 You just have to replace during the helm install **eks-values.yaml** by **eks-nginx-values.yaml** that contains the relevant ingress annotations :
 `kubernetes.io/ingress.class: nginx` and `nginx.ingress.kubernetes.io/backend-protocol: https`
 
+If you want to install ODM as a demo mode with the ODM postgreSQL internal data base :
+
+- Get the [eks-nginx-values.yaml](./eks-nginx-values.yaml) file and replace the following keys:
+  - `<AWS-AccountId>` is your AWS Account Id
+
+```bash
+helm install mycompany ibmcharts/ibm-odm-prod --version 22.1.0 -f eks-nginx-values.yaml
+```
+
+If you want to install ODM with the AWS RDS postgreSQL database created in [step 3](#3-optional-create-an-rds-database-20-min) :
+
+- Get the [eks-rds-nginx-values.yaml](./eks-rds-nginx-values.yaml) file and replace the following keys:
+  - `<AWS-AccountId>` is your AWS Account Id
+  - `<RDS_DB_ENDPOINT>` is your database server endpoint (of the form: `db-server-name-1.********.<region>.rds.amazonaws.com`)
+  - `<RDS_DATABASE_NAME>` is the initial database name defined when creating the RDS database
+
+
 ```bash
-helm install mycompany ibmcharts/ibm-odm-prod --version 22.1.0 \
-             --set image.repository=cp.icr.io/cp/cp4a/odm \
-             -f eks-nginx-values.yaml
+helm install mycompany ibmcharts/ibm-odm-prod --version 22.1.0 -f eks-rds-nginx-values.yaml
 ```