fix mysql 8 version

docker-compose.altenatives.yml

@@ -3,7 +3,7 @@ version: "3.9"
 services:
 
   db:
-    image: mysql
+    image: mysql:8.0.36-debian
     # NOTE: use of "mysql_native_password" is not recommended: https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password
     # (this is just an example, not intended to be a production configuration)
     command: --default-authentication-plugin=mysql_native_password --max_allowed_packet=$MYSQL_MAX_ALLOWED_PACKET --max_connections=$MYSQL_MAX_CONNECTION --long_query_time=$MYSQL_LONG_QUERY_TIME --sql_mode="NO_ENGINE_SUBSTITUTION"
@@ -25,6 +25,6 @@ services:
     - MYSQL_QUERY_CACHE_SIZE
     - MYSQL_KEY_BUFFER_SIZE
     volumes:
-    - ${PHRASEANET_DB_DIR}2:/var/lib/mysql
+    - ${PHRASEANET_DB_DIR}_mysql8:/var/lib/mysql:rw
     networks:
       - internal