Trying to install wordpress on docker for windows

Question

I am using docker for windows, I just installed it and I have the following stack.yml file which returns an error I will put below the yml file. I don't understand what may be causing the issue I am running the command docker-compose -f stack.yml up do get everything to work, could someone please help. Thanks ahead of time.

version: '3.1'

services:

  wordpress:
    image: wordpress
    restart: always
    ports:
      - 8080:80
    environment:
      WORDPRESS_DB_HOST: db
      WORDPRESS_DB_USER: exampleuser
      WORDPRESS_DB_PASSWORD: examplepass
      WORDPRESS_DB_NAME: exampledb

  db:
    image: mysql:5.7
    restart: always
    environment:
      MYSQL_DATABASE: exampledb
      MYSQL_USER: exampleuser
      MYSQL_PASSWORD: examplepass
      MYSQL_RANDOM_ROOT_PASSWORD: '1'

error

wordpress_1  | Complete! WordPress has been successfully copied to /var/www/html
wordpress_1  |
wordpress_1  | MySQL Connection Error: (2002) Connection refused
wordpress_1  |
wordpress_1  | Warning: mysqli::__construct(): (HY000/2002): Connection refused in Standard input code on line 22
wordpress_1  |
wordpress_1  | Warning: mysqli::__construct(): (HY000/2002): Connection refused in Standard input code on line 22
wordpress_1  |
wordpress_1  | MySQL Connection Error: (2002) Connection refused
wordpress_1  |
wordpress_1  | Warning: mysqli::__construct(): (HY000/2002): Connection refused in Standard input code on line 22

Answer 1

The app needs to have the db run beforehand. Add the depends_on value for the WordPress service, which will make sure the db is container is up, before the WordPress container. The MySQL service within the container should boot up soon.

version: '3.1'

services:

  wordpress:
    image: wordpress
    restart: always
    depends_on:
      - db
    ports:
      - 8080:80
    environment:
      WORDPRESS_DB_HOST: db
      WORDPRESS_DB_USER: exampleuser
      WORDPRESS_DB_PASSWORD: examplepass
      WORDPRESS_DB_NAME: exampledb

  db:
    image: mysql:5.7
    restart: always
    environment:
      MYSQL_DATABASE: exampledb
      MYSQL_USER: exampleuser
      MYSQL_PASSWORD: examplepass
      MYSQL_RANDOM_ROOT_PASSWORD: '1'