Add the README and entrypoint changes

README.md

@@ -57,7 +57,7 @@ like to upgrade to, then change your docker image to match:
 
 ### "One shot" mode
 
-If you just want to perform the upgrade without starting PostgreSQL
+If you just want to perform the upgrade without running PostgreSQL
 afterwards, then you can use "[One Shot](https://github.com/pgautoupgrade/docker-pgautoupgrade/issues/13)" mode.
 
 To do that, add an environment variable called `PGAUTO_ONESHOT`

docker-entrypoint.sh

@@ -575,9 +575,11 @@ _main() {
 
 			UPGRADE_PERFORMED=1
 
-			echo "**********************************************************"
-			echo "Automatic upgrade process finished with no errors reported"
-			echo "**********************************************************"
+			echo "***************************************************************************************"
+			echo "Automatic upgrade process finished upgrading the data format to PostgreSQL ${PGTARGET}."
+			echo "The database has not yet been reindexed nor updated the query planner stats.  Those    "
+			echo "will be done by a background task shortly.                                             "
+			echo "***************************************************************************************"
 		fi
 
 		### The main pgautoupgrade scripting ends here ###