Dont use secretOrRandomPassword for username since it keeps changing (bug?)

README.md

@@ -112,7 +112,7 @@ It is important to secure the databases in web applications to prevent unwanted
 This infrastructure uses the following mechanisms to secure the PostgreSQL database:
 
 * Azure Firewall: The database is accessible only from other Azure IPs, not from public IPs. (Note that includes other customers using Azure).
-* Admin Username: Randomly generated and stored in Key Vault.
+* Admin Username: Unique string generated based on subscription ID and stored in Key Vault.
 * Admin Password: Randomly generated and stored in Key Vault.
 * PostgreSQL Version: Latest available on Azure, version 14, which includes security improvements.
 

infra/main.bicep

@@ -11,7 +11,7 @@ param location string
 
 @secure()
 @description('PostGreSQL Server administrator username')
-param postgresAdminUser string
+param postgresAdminUser string = 'admin${uniqueString(subscription().subscriptionId)}'
 
 @secure()
 @description('PostGreSQL Server administrator password')

infra/main.parameters.json

@@ -11,9 +11,6 @@
       "principalId": {
         "value": "${AZURE_PRINCIPAL_ID}"
       },
-      "postgresAdminUser": {
-        "value": "$(secretOrRandomPassword ${AZURE_KEY_VAULT_NAME} postgresAdminUser)"
-      },
       "postgresAdminPassword": {
         "value": "$(secretOrRandomPassword ${AZURE_KEY_VAULT_NAME} postgresAdminPassword)"
       },