Bonjour,

J'essaie de faire le MOOC "Automatisez des tests fonctionnels pour le web avec Cypress" sur OpenClassrooms (https://openclassrooms.com/fr/course...b-avec-cypress).
Il y a plusieurs étapes de préparation (installation de Docker, vérification de la possibilité de virtualiser sur le PC...) et j'en suis à démarrer le conteneur pour simuler un site web de vente en ligne de matériel informatique.
Le conteneur est fourni par OpenClassrooms : https://github.com/OpenClassrooms-St...96-Tech-Buy-FR
Il y a trois éléments dans le conteneur : Angular, Symfony et MySQL. C'est ce dernier qui ne démarre pas correctement (ni depuis Docker Desktop, ni depuis l'invite de commandes avec "docker-compose up").

2025-07-30 08:59:31.363 | 2025-07-30T06:59:31.363065Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 9.4.0) MySQL Community Server - GPL.
2025-07-30 08:59:31.363 | 2025-07-30T06:59:31.363114Z 0 [System] [MY-015016] [Server] MySQL Server - end.
2025-07-30 08:59:32.116 | 2025-07-30 06:59:32+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 9.4.0-1.el9 started.
2025-07-30 08:59:40.055 | 2025-07-30 06:59:40+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
2025-07-30 08:59:40.065 | 2025-07-30 06:59:40+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 9.4.0-1.el9 started.
2025-07-30 08:59:40.589 | '/var/lib/mysql/mysql.sock' -> '/var/run/mysqld/mysqld.sock'
2025-07-30 08:59:41.104 | 2025-07-30T06:59:40.634993Z 0 [System] [MY-015015] [Server] MySQL Server - start.
2025-07-30 08:59:41.104 | 2025-07-30T06:59:41.084837Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 9.4.0) starting as process 1
2025-07-30 08:59:41.104 | 2025-07-30T06:59:41.084899Z 0 [System] [MY-015590] [Server] MySQL Server has access to 8 logical CPUs.
2025-07-30 08:59:41.104 | 2025-07-30T06:59:41.084933Z 0 [System] [MY-015590] [Server] MySQL Server has access to 4020469760 bytes of physical memory.
2025-07-30 08:59:41.104 | 2025-07-30T06:59:41.102536Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /var/lib/mysql/ is case insensitive
2025-07-30 08:59:41.211 | 2025-07-30T06:59:41.210893Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2025-07-30 08:59:57.829 | 2025-07-30T06:59:57.829572Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2025-07-30 08:59:58.838 | mysqld: Table 'mysql.plugin' doesn't exist
2025-07-30 08:59:58.838 | 2025-07-30T06:59:58.838100Z 0 [ERROR] [MY-010735] [Server] Could not open the mysql.plugin table. Please perform the MySQL upgrade procedure.
2025-07-30 08:59:58.838 | 2025-07-30T06:59:58.838712Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:58.839 | 2025-07-30T06:59:58.839097Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:58.839 | 2025-07-30T06:59:58.839480Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:58.840 | 2025-07-30T06:59:58.840228Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:58.841 | 2025-07-30T06:59:58.840825Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:58.841 | 2025-07-30T06:59:58.841228Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:58.841 | 2025-07-30T06:59:58.841609Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:59.149 | 2025-07-30T06:59:59.149380Z 0 [Warning] [MY-010015] [Repl] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2025-07-30 08:59:59.350 | 2025-07-30T06:59:59.349761Z 0 [Warning] [MY-010015] [Repl] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2025-07-30 08:59:59.389 | 2025-07-30T06:59:59.389539Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
2025-07-30 08:59:59.390 | 2025-07-30T06:59:59.390627Z 0 [System] [MY-013602] [Server] Channel mysql_main configured to support TLS. Encrypted connections are now supported for this channel.
2025-07-30 08:59:59.414 | 2025-07-30T06:59:59.414395Z 0 [Warning] [MY-011810] [Server] Insecure configuration for --pid-file: Location '/var/run/mysqld' in the path is accessible to all OS users. Consider choosing a different directory.
2025-07-30 08:59:59.457 | 2025-07-30T06:59:59.456757Z 0 [Warning] [MY-010441] [Server] Failed to open optimizer cost constant tables
2025-07-30 08:59:59.457 | 2025-07-30T06:59:59.457279Z 0 [ERROR] [MY-013129] [Server] A message intended for a client cannot be sent there as no client-session is attached. Therefore, we're sending the information to the error-log instead: MY-001146 - Table 'mysql.component' doesn't exist
2025-07-30 08:59:59.457 | 2025-07-30T06:59:59.457345Z 0 [Warning] [MY-013129] [Server] A message intended for a client cannot be sent there as no client-session is attached. Therefore, we're sending the information to the error-log instead: MY-003543 - The mysql.component table is missing or has an incorrect definition.
2025-07-30 08:59:59.457 | 2025-07-30T06:59:59.457561Z 0 [ERROR] [MY-000067] [Server] unknown variable 'default-authentication-plugin=mysql_native_password'.
2025-07-30 08:59:59.459 | 2025-07-30T06:59:59.458730Z 0 [ERROR] [MY-010119] [Server] Aborting
2025-07-30 09:00:01.745 | 2025-07-30T07:00:01.745037Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 9.4.0) MySQL Community Server - GPL.
2025-07-30 09:00:01.745 | 2025-07-30T07:00:01.745143Z 0 [System] [MY-015016] [Server] MySQL Server - end.
Quand on essaie de démarrer mysql, il y a plusieurs traces de niveau Note ou System, un Warning et surtout une trace de niveau Error :
2025-07-30 08:59:58.838 | mysqld: Table 'mysql.plugin' doesn't exist
2025-07-30 08:59:58.838 | 2025-07-30T06:59:58.838100Z 0 [ERROR] [MY-010735] [Server] Could not open the mysql.plugin table. Please perform the MySQL upgrade procedure.

Le fichier docker-compose.yml spécifie la version "latest" de MySQL :
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version: "3.9"

services:
  angular:
    build: ./frontend
    ports:
      - 8080:8080
    volumes:
      - ./frontend:/app
    depends_on:
      - symfony

  symfony:
    build: ./backend
    ports:
      - 8081:8081
    volumes:
      - ./backend:/backend
    environment:
      - DATABASE_URL=mysql://root:techbuy@mysql:3306/techbuy?serverVersion=8&charset=utf8mb4
    depends_on:
      - mysql
    networks:
      - symfony

  mysql:
    image: mysql:latest
    restart: always
    command: --default-authentication-plugin=mysql_native_password
    environment:
      - MYSQL_DATABASE=techbuy
      - MYSQL_ROOT_PASSWORD=techbuy
      - MYSQL_USER=techbuy
      - MYSQL_PASSWORD=techbuy

    volumes:
      - ./data:/docker-entrypoint-initdb.d
      - ./mysql:/var/lib/mysql
    networks:
      - symfony
    ports:
      - 3308:3306

      
networks:
  symfony:
  
volumes:
  data:
C'est un cours qui existe depuis environ deux ans.
Je ne sais pas quoi faire. Est-ce que quelqu'un peut m'aider ? Merci d'avance.