Another attempt

scripts/mysql_secure_install_equivalent.sql

@@ -0,0 +1,5 @@
+UPDATE mysql.user SET authentication_string=PASSWORD('Password1234') WHERE User='root';
+DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');
+DELETE FROM mysql.user WHERE User='';
+DELETE FROM mysql.db WHERE Db='test' OR Db='test_%';
+FLUSH PRIVILEGES;