now modify our docker-compose to have these containers backup to my homelab automatically as fully encrypted containers 

version: '3.7'

services:
  wordpress:
    image: wordpress:latest
    container_name: wordpress
    restart: always
    ports:
      - 8080:80
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpresspassword
      WORDPRESS_DB_NAME: wordpress
    volumes:
      - wordpress_data:/var/www/html

  phpmyadmin:
    image: phpmyadmin/phpmyadmin
    container_name: phpmyadmin
    restart: always
    ports:
      - 8081:80
    environment:
      PMA_HOST: db
      MYSQL_ROOT_PASSWORD: rootpassword

  db:
    image: mysql:5.7
    container_name: wordpress_db
    restart: always
    environment:
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpresspassword
      MYSQL_ROOT_PASSWORD: rootpassword
    volumes:
      - db_data:/var/lib/mysql

volumes:
  wordpress_data:
  db_data: