Connect laravel container to existing mysql container via docker compose - php

Question

I am new to docker, I am trying to connect the existing MySQL container to my Laravel application through docker-compose.
Where MySQL docker-compose.yml file is like
version: '3'
services:
web:
container_name: ${APP_NAME}_web
build:
context: ./docker/web
ports:
- "9000:80"
volumes:
- ./:/var/www/app
depends_on:
- db
db:
container_name: ${APP_NAME}_db
image: mysql:5.7
ports:
- "3307:3306"
restart: always
volumes:
- dbdata:/var/lib/mysql/
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=laravel_docker_db
volumes:
dbdata:
driver: local
driver_opts:
type: none
device: /storage/docker/laravel_mysql_data
o: bind
This script is downloading the latest mysql version and making a new container. I just want to connect MYSQL container with my application
Where my existing MYSQL container is created with a specific IP using a bridge network and running on docker-machine.
I am wondering, can I define the existing MYSQL container configurations on the db context?

Answer 1

Try this docker-compose file:
version: '3.5'
services:
db:
container_name: myapp_db
image: mysql:5.7
ports:
- "3307:3306"
restart: always
volumes:
- dbdata:/var/lib/mysql/
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=laravel_docker_db
networks:
- myapp-network
networks:
myapp-network:
driver: bridge
Situation has two cases:
1. If your laravel instance is in docker too - just add to .env file next rows:
DB_HOST=myapp_db
DB_PORT=3306
DB_DATABASE=laravel_docker_db
DB_USERNAME=root
DB_PASSWORD=root
2.If you don't use docker for laravel - just change variable DB_HOST=localhost

Answer 2

In .env file:
DB_HOST=db
DB_PORT=3306
DB_DATABASE=your database name
DB_USERNAME=root
DB_PASSWORD=root