Docker and Mariadb 10.5: Can't set root password-CodePudding

This is my docker-compose.yml file:

version: "3.9"

services:
  db:
    image: mariadb:10.5
    restart: always
    environment:
      MARIADB_ROOT_PASSWORD: "mypassword"
      MARIADB_DATABASE: "mydb"
      MARIADB_USER: "myuser"
      MARIADB_PASSWORD: "mypassword"
      MYSQL_ROOT_PASSWORD: "mypassword"
      MYSQL_DATABASE: "mydb"
      MYSQL_USER: "myuser"
      MYSQL_PASSWORD: "mypassword"
    healthcheck:
      test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]
      timeout: 10s
      retries: 10

This is how I build and start my container

docker-compose -f docker-compose.yml up --build -d

After MariaDB started I try to connect to the database inside the container

docker exec -it CONTAINERID /bin/bash
root@a88f9980d7f6:/# mariadb -u root -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

Any idea why this is not working for me?

System informations:

Docker version 20.10.17, build 100c701
Docker Compose version v2.6.1
Linux dev 4.19.0-14-amd64 #1 SMP Debian 4.19.171-2 (2021-01-30) x86_64 GNU/Linux
Debian GNU/Linux 10 (buster)

CodePudding user response：

mariadb -u root -pmypassword just to make sure you are not having a typo. This could put password in the terminal history (not secure)

Could also be an issue with the image.

docker-compose down then you can do docker rmi mariadb:10.5 to remove the image and do docker-compose up -d please note you dont need --build as you are referencing an image in your docker-compose.yml

Alternatively you can do docker system prune BUT THIS WILL REMOVE all unused containers, networks, images (both dangling and unreferenced), and optionally, volumes. USE WITH CAUTION.