Mutiple docker compose

docker-compose-critical.yml

# /tmp/compose/
version: '3.3'

services:
   db:
     image: mysql:5.7
     volumes:
       - db_data:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: somewordpress
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress

volumes:
    db_data: {}

docker-compose.yml

# /tmp/compose/
version: '3.3'

services:
   wordpress:
     # Remove this
     # depends_on:
     #   - db
     image: wordpress:latest
     ports:
       - "8000:80"
     restart: always
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
       WORDPRESS_DB_NAME: wordpress
volumes:
    db_data: {}

# reference the network created
networks:
  default:
    external:
      name: compose_default

run.sh

#!/bin/bash

## Create the db and the default network
docker-compose -f docker-compose-critical.yml up -d

## Create everythin else
docker-compose up -d

# Now you can delete everythin except the db
docker-compose down