dev: update backend to talk to previewer

dev/constellations-backend.tf

@@ -68,6 +68,7 @@ resource "azurerm_linux_web_app" "cx_backend" {
     "AZURE_COSMOS_CONNECTIONSTRING" = azurerm_cosmosdb_account.cx_backend.connection_strings[0]
     "CX_CORS_ORIGINS"               = "https://${var.tld}"
     "CX_PREVIEW_BASE_URL"           = "https://${azurerm_cdn_endpoint_custom_domain.cxdata.host_name}/previews"
+    "CX_PREVIEW_SERVICE_URL"        = "http://${azurerm_private_dns_a_record.cx_previewer_server.name}.azurewebsites.net"
     "CX_SESSION_SECRETS"            = var.sessionSecrets
     "CX_SUPERUSER_ACCOUNT_ID"       = var.superuserAccountId
     "KEYCLOAK_URL"                  = "https://${var.tld}/auth/"
@@ -80,6 +81,18 @@ resource "azurerm_linux_web_app" "cx_backend" {
     app_command_line       = "yarn start"
   }
 
+  logs {
+    detailed_error_messages = false
+    failed_request_tracing  = false
+
+    http_logs {
+      file_system {
+        retention_in_days = 0
+        retention_in_mb   = 35
+      }
+    }
+  }
+
   virtual_network_subnet_id = azurerm_subnet.cx_backend_app.id
 }