Docker Compose for WordPress + MySQL

services:
  wordpress:
    image: wordpress:latest
    ports:
      - target: 80
        mode: ingress
    environment:
      - WORDPRESS_DB_HOST=db
      - WORDPRESS_DB_USER=wordpress
      - WORDPRESS_DB_PASSWORD=${WORDPRESS_DB_PASSWORD}
      - WORDPRESS_DB_NAME=wordpress
    healthcheck:
      test:
        - CMD
        - curl
        - -f
        - http://localhost/
      interval: 30s
      timeout: 10s
      retries: 3
    depends_on:
      - db
    deploy:
      resources:
        reservations:
          cpus: "0.5"
          memory: 256M
    restart: unless-stopped
  db:
    image: mysql:8
    ports:
      - target: 3306
        mode: host
    environment:
      - MYSQL_DATABASE=wordpress
      - MYSQL_USER=wordpress
      - MYSQL_PASSWORD=${MYSQL_PASSWORD}
      - MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD}
    healthcheck:
      test:
        - CMD
        - mysqladmin
        - ping
        - -h
        - localhost
      interval: 10s
      timeout: 5s
      retries: 5
    deploy:
      resources:
        reservations:
          cpus: "0.5"
          memory: 256M
    restart: unless-stopped