Remove MYSQL_USER and MYSQL_PASSWORD from docker-compose.yaml #1123
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The right way to configure the *root* password is using the environment variable
`MYSQL_ROOT_PASSWORD`.
It also remove the `MYSQL_PASSWORD` because is only used the root user.
From MySQL log:
```
2021-08-13 20:28:55+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
2021-08-13 20:28:55+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.26-1debian10 started.
2021-08-13 20:28:55+00:00 [ERROR] [Entrypoint]: MYSQL_USER="root", MYSQL_USER and MYSQL_PASSWORD are for configuring a regular user and cannot be used for the root user
Remove MYSQL_USER="root" and use one of the following to control the root user password:
- MYSQL_ROOT_PASSWORD
- MYSQL_ALLOW_EMPTY_PASSWORD
- MYSQL_RANDOM_ROOT_PASSWORD
```
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The right way to configure the root password is using the environment variable
MYSQL_ROOT_PASSWORD.It also remove the
MYSQL_PASSWORDbecause is only used the root user.From MySQL log: