Add region configuration to default profile

Author: Ruinong Tian

build_artifacts/v3/v3.1/v3.1.1/dirs/etc/sagemaker-ui/sagemaker_ui_post_startup.sh

@@ -65,6 +65,10 @@ echo "Successfully removed the ~/.aws/config file"
 aws configure set credential_source EcsContainer
 echo "Successfully configured default profile"
 
+# Add region configuration using REGION_NAME environment variable
+aws configure set region "${REGION_NAME}"
+echo "Successfully configured region to ${REGION_NAME}"
+
 # add SparkMonitor and Connection Magic entrypoint
 NB_USER=sagemaker-user