chore: added mysql in docker compose

docker-compose.yml

@@ -1,6 +1,17 @@
 version: "3"
 
 services:
+  mysql:
+    image: mariadb/server:10.5
+    container_name: mysqlBeta
+    hostname: mysql
+    environments:
+      MARIADB_ROOT_PASSWORD: "${MARIADB_ROOT_PASSWORD}"
+    command:
+      - --character-set-server=utf8mb4
+      - --collation-server=utf8mb4_unicode_ci
+    volumes:
+      - /home/ubuntu/mysql-beta:/var/lib/mysql
   koreanbots:
     container_name: koreanbots
     build: .