Correctly using mysql commands in docker-compose? - mysql

Question

I am trying to learn docker-compose. I am having trouble running mysql commands through docker compose.
This is my docker-compose file:
version: '3'
services:
mysql:
image: mysql
container_name: mysql
restart: always
env_file: .env
environment:
- MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASS
- MYSQL_USER=$MYSQL_USER
- MYSQL_PASSWORD=$MYSQL_PASS
- MYSQL_DB=$MYSQL_DB
volumes:
- db-data:/var/lib/mysql
command: >
mysql -e "CREATE DATABASE \${MYSQL_DB}"
&& mysql -e "GRANT ALL PRIVILEGES ON \${MYSQL_DB}.* TO '\${MYSQL_USER}'#'%'"
&& mysql -e "DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');"
ports:
- $MYSQL_PORT:3306
volumes:
db-data:
But when I run the docker-compose up --force-recreate --build, I get the mysql usage guide output:
Attaching to mysql
mysql | mysql Ver 8.0.25 for Linux on x86_64 (MySQL Community Server - GPL)
mysql | Copyright (c) 2000, 2021, Oracle and/or its affiliates.
mysql |
mysql | Oracle is a registered trademark of Oracle Corporation and/or its
mysql | affiliates. Other names may be trademarks of their respective
mysql | owners.
mysql |
mysql | Usage: mysql [OPTIONS] [database]
mysql | -?, --help Display this help and exit.
mysql | -I, --help Synonym for -?
mysql | --auto-rehash Enable automatic rehashing. One doesn't need to use
mysql | 'rehash' to get table and field completion, but startup
...etc...
Am I using the command: properly to send mysql commands?

Answer 1

I want to suggest a different approach with MySQL:
You can mount another SQL script file that will run at the beginning:
version: '3'
services:
mysql:
image: mysql
container_name: mysql
restart: always
env_file: .env
environment:
- MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASS
- MYSQL_USER=$MYSQL_USER
- MYSQL_PASSWORD=$MYSQL_PASS
- MYSQL_DB=$MYSQL_DB
volumes:
- db-data:/var/lib/mysql
- ./init.sql:/docker-entrypoint-initdb.d/init.sql
ports:
- $MYSQL_PORT:3306
volumes:
db-data:
now create init.sql in your docker-compose.yml directory:
CREATE DATABASE ${MYSQL_DB}
GRANT ALL PRIVILEGES ON ...
You can see it in Initializing a fresh instance.