docker-compose.yml

version: '3'
# See https://docs.docker.com/compose/overview/ for more information.

# If you make changes to this file or any related files, apply them by
# navigating to the directory that holds this file and run this as root:
#   docker-compose down; docker-compose up -d

# Create two networks: one for front-end containers that we'll make
# publicly accessible to the internet, and one for private back-end.
networks:
  frontend:
  backend:

# Create persistent Docker volumes to preserve important data.
# We don't want our data to be lost when restarting containers.
volumes:
  vol-wp-db:
  vol-wp-content:

# Create our containers.
services:
  # Traefik is a reverse proxy. It handles SSL and passes traffic to
  # Docker containers via rules you define in docker-compose labels.
  # Its dashboard is at http://example.com/traefik/ (behind a login).
  traefik:
    # https://hub.docker.com/_/traefik/
    image: traefik:latest
    command: --api --docker --acme.email="${ACME_EMAIL}"
    restart: always
    networks:
      - backend
      - frontend
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock # Access to Docker
      - ./traefik.toml:/traefik.toml              # Traefik configuration
      - ./acme.json:/acme.json                    # SSL certificates
    ports:
      # Map port 80 and 443 on the host to this container.
      - "80:80"
      - "443:443"
    labels:
      - "traefik.docker.network=frontend"
      - "traefik.enable=true"
      - "traefik.frontend.rule=Host:${TRAEFIK_DOMAINS}; PathPrefixStrip:/traefik"
      - "traefik.port=8080"
      - "traefik.protocol=http"
      # Remove next line to disable login prompt for the dashboard.
      - "traefik.frontend.auth.basic=${BASIC_AUTH}"

  # Watchtower detects if any linked containers have an new image
  # available, automatically updating & restarting them if needed.
  watchtower:
    # https://hub.docker.com/r/centurylink/watchtower/
    image: v2tec/watchtower:latest
    # https://github.com/v2tec/watchtower#options
    # This schedule applies updates (if available) at midnight.
    command: --cleanup --schedule "0 0 0 * * *"
    restart: always
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    labels:
      - "traefik.enable=false"


  wp-db:
    # https://hub.docker.com/_/mariadb/
    # Specify 10.3 as we only want watchtower to apply minor updates
    # (eg, 10.3.1) and not major updates (eg, 10.4).
    image: mariadb:10.3
    restart: always
    networks:
      - backend
    volumes:
      # Ensure the database persists between restarts.
      - vol-wp-db:/var/lib/mysql
    environment:
      MYSQL_ROOT_PASSWORD: ${WORDPRESS_DB_ROOT_PASSWORD}
      MYSQL_DATABASE: ${WORDPRESS_DB_NAME}
      MYSQL_USER: ${WORDPRESS_DB_USER}
      MYSQL_PASSWORD: ${WORDPRESS_DB_PASSWORD}
    labels:
      - "traefik.enable=false"

  # The main front-end application.
  wp:
    # https://hub.docker.com/_/wordpress/
    # Replace "latest" with "4.9" to stick to a specific version.
    image: wordpress:latest
    depends_on:
      - wp-db
    restart: always
    networks:
      - backend
      - frontend
    volumes:
      # Ensure WP themes/plugins/uploads persist between restarts.
      - vol-wp-content:/var/www/html/wp-content
      # Install our own php.ini, which can be customized.
      - ./php.ini:/usr/local/etc/php/php.ini
    environment:
      WORDPRESS_DB_HOST: wp-db:3306
      WORDPRESS_DB_NAME: ${WORDPRESS_DB_NAME}
      WORDPRESS_DB_USER: ${WORDPRESS_DB_USER}
      WORDPRESS_DB_PASSWORD: ${WORDPRESS_DB_PASSWORD}
    labels:
      - "traefik.docker.network=frontend"
      - "traefik.enable=true"
      - "traefik.frontend.rule=Host:${WORDPRESS_DOMAINS}"
      - "traefik.port=80"
      - "traefik.protocol=http"
      # Uncomment the following line to enable HSTS header.
      #- "traefik.frontend.headers.STSSeconds=15768000"

  # Navigate to http://example.com/phpmyadmin/ to manage your MySQL
  # databases. (Don't forget the last forward slash.) Like the Traefik
  # dashboard, this is behind a login prompt to help you stay secure.
  wp-phpmyadmin:
    # https://hub.docker.com/r/phpmyadmin/phpmyadmin/
    image: phpmyadmin/phpmyadmin:latest
    depends_on:
      - wp-db
    restart: always
    networks:
      - backend
      - frontend
    volumes:
      # Install our own php.ini, which can be customized.
      - ./php.ini:/usr/local/etc/php/php.ini
    environment:
      PMA_HOST: wp-db
      PMA_ABSOLUTE_URI: /phpmyadmin/
      MYSQL_ROOT_PASSWORD: ${WORDPRESS_DB_ROOT_PASSWORD}
    labels:
      - "traefik.docker.network=frontend"
      - "traefik.enable=true"
      - "traefik.frontend.rule=Host:${WORDPRESS_DOMAINS}; PathPrefixStrip:/phpmyadmin/"
      - "traefik.port=80"
      - "traefik.protocol=http"
      # Remove the next line if you don't want a browser login prompt.
      - "traefik.frontend.auth.basic=${BASIC_AUTH}"

  # This allows WordPress to send email straight out of the box without
  # having to rely on an external provider like SendGrid or MailGun.
  # It makes an SMTP host available at the hostname "mail".
  mail:
    image: bytemark/smtp
    restart: always
    networks:
      - frontend
    labels:
      - "traefik.enable=false"