mariadb and nginx works both with debian and alpine

+ makefile a little clean up

srcs/requirements/mariadb/conf/create_db.sql

@@ -0,0 +1,5 @@
+USE mysql;
+
+CREATE DATABASE IF NOT EXISTS ${DB_NAME};
+CREATE USER IF NOT EXISTS '${DB_USER}'@'localhost' IDENTIFIED BY '${DB_PSWD}';
+GRANT ALL PRIVILEGES ON ${DB_NAME}.* TO '${DB_USER}'@'localhost' with grant option;