added table schema fix again and fixed it

it can be removed once 10.4 is released and published on docker hub
in which case the tag below for op10 has to be updated too

script/migration/migrate-from-pre-8.sh

@@ -197,11 +197,11 @@ else
 fi
 
 echo
-echo "2.3) Renaming PostgreSQL schema from $DATABASE to public"
+echo "2.3) Moving dangling tables from $DATABASE to public"
 
-MOVE_SCHEMA_FN='' read -r -d '' String <<"EOF"
+read -r -d '' MOVE_SCHEMA_FN <<EOF
 CREATE OR REPLACE FUNCTION move_schema_to_public(old_schema varchar) RETURNS void LANGUAGE plpgsql VOLATILE AS
-$$
+\$\$
 DECLARE
     row record;
 BEGIN
@@ -210,16 +210,22 @@ BEGIN
         EXECUTE 'ALTER TABLE ' || quote_ident(old_schema) || '.' || quote_ident(row.tablename) || ' SET SCHEMA public;';
     END LOOP;
 END;
-$$;
+\$\$;
 EOF
 
-
 docker exec -e PGPASSWORD=postgres -it migrate8to10 psql \
   -h $DOCKER_HOST_IP \
   -p $POSTGRES_PORT \
   -U postgres \
   -d $DATABASE \
-  -c "${MOVE_SCHEMA_FN}; SELECT * FROM move_schema_to_public('$DATABASE');"
+  -c "$(echo $MOVE_SCHEMA_FN); SELECT * FROM move_schema_to_public('$DATABASE');"
+
+if [[ $? -gt 0 ]]; then
+  echo "  Could not move tables from $DATABASE to public. You may have to do this yourself."
+  exit 1
+else
+  echo "  Moved tables from $DATABASE to public"
+fi
 
 echo
 echo "2.4) Dumping migrated database to $DATABASE-migrated.sql"