Set NLS variables if oracle

Author: charsbar

bin/update_dockerfile.pl

@@ -1498,6 +1498,11 @@ sub load_prereqs {
 % if ($type eq 'postgresql') {
 export MT_TEST_BACKEND=Pg
 % }
+% if ($type =~ /oracle/) {
+export MT_TEST_BACKEND=Oracle
+export NLS_LANG=Japanese_Japan.AL32UTF8
+export NLS_SORT=JAPANESE_M_CI
+% }
 
 exec "$@"