docker-wordpress-example/docker-stack.yml at master · brodster2/docker-wordpress-example · GitHub

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version: "3.4"
services:
  wordpress:
    image: wordpress:4-php7.1-fpm-alpine
    ports:
      - 9000:9000
    volumes:
      - wordpress:/var/www/html
    secrets:
      - wp_db_password
    environment:
      - WORDPRESS_DB_USER=wp
      - WORDPRESS_DB_NAME=wp
      - WORDPRESS_DB_PASSWORD_FILE=/run/secrets/wp_db_password
      - WORDPRESS_DB_HOST=mariadb
    networks:
      - wordpress
      - nginx
    deploy:
      placement:
          constraints: [node.role == worker]
      replicas: 1
      update_config:
        parallelism: 2
        delay: 10s
      restart_policy:
        condition: on-failure

  mariadb:
    image: mariadb
    volumes:
      - mariadb_vol:/var/lib/mysql
    secrets:
      - wp_db_password
      - root_db_password
    environment:
      - MYSQL_USER=wp
      - MYSQL_DATABASE=wp
      - MYSQL_PASSWORD_FILE=/run/secrets/wp_db_password
      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/root_db_password
    networks:
      - wordpress
    deploy:
      placement:
          constraints: [node.role == manager]
      replicas: 1
      restart_policy:
        condition: on-failure

  nginx:
    image: nginx:latest
    ports:
      - 80:80
    volumes:
      - wordpress:/var/www/html
    secrets:
      - source: nginx_config
        target: /etc/nginx/conf.d/default.conf #have to call default or won't be loaded by nginx
    networks:
      - nginx

secrets:
  wp_db_password:
    external: true
  root_db_password:
    external: true
  nginx_config:
    external: true

volumes:
  wordpress:
  mariadb_vol:

networks:
  wordpress:
  nginx: