Fixed MySQL version to keep compatibility

docker-compose.yml

@@ -35,11 +35,11 @@ services:
   misp-db:
     container_name: misp-db
     hostname: mysql
-    image: mysql/mysql-server:latest
+    image: mysql/mysql-server:5.7
     restart: always
     networks:
       - misp-network
     volumes:
       - /data/tmp/mysql:/var/lib/mysql
     environment:
-      - MYSQL_ROOT_PASSWORD=xxxxxxxx
+      - MYSQL_ROOT_PASSWORD=xxxxxxxx