feat(MariaDB): Add new service

mariadb/.env

@@ -5,3 +5,4 @@ MARIADB_ROOT_PASSWORD=replace-me
 MARIADB_USER=user-example
 MARIADB_PASSWORD=password-example
 MARIADB_DATABASE=mariadb-database-name-example
+#MARIADB_COMMAND=

mariadb/docker-compose.yml

@@ -8,6 +8,7 @@ services:
   mariadb:
     container_name: ${MARIADB_CONTAINER_NAME:-mariadb}
     image: ${MARIADB_IMAGE:-mariadb:10.7.1-focal}
+    command: ${MARIADB_COMMAND}
     restart: always
     environment:
       MARIADB_ROOT_PASSWORD: ${MARIADB_ROOT_PASSWORD:?err}