Nextcloud をオフショアVPSでホスト

## docker-compose.yml — Nextcloud + MariaDB + Redis
## Prereqs on Ubuntu 24.04:
##   apt update && apt install -y docker.io docker-compose-v2
## Put this file in /opt/nextcloud/ and run:  docker compose up -d
## Then front it with a TLS reverse proxy (Caddy/Nginx) on 443 -> 127.0.0.1:8080

services:
  db:
    image: mariadb:11
    restart: unless-stopped
    command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
    volumes:
      - db:/var/lib/mysql
    environment:
      - MARIADB_ROOT_PASSWORD=CHANGE_ME_root
      - MARIADB_DATABASE=nextcloud
      - MARIADB_USER=nextcloud
      - MARIADB_PASSWORD=CHANGE_ME_db
    networks:
      - nc

  redis:
    image: redis:7-alpine
    restart: unless-stopped
    command: redis-server --requirepass CHANGE_ME_redis
    networks:
      - nc

  app:
    image: nextcloud:30-apache
    restart: unless-stopped
    depends_on:
      - db
      - redis
    ports:
      - "127.0.0.1:8080:80"   # bind to localhost; expose via reverse proxy TLS
    volumes:
      - nextcloud:/var/www/html          # app + config + apps
      - ./data:/var/www/html/data        # user files (put on your big data volume)
    environment:
      - MYSQL_HOST=db
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud
      - MYSQL_PASSWORD=CHANGE_ME_db
      - REDIS_HOST=redis
      - REDIS_HOST_PASSWORD=CHANGE_ME_redis
      - NEXTCLOUD_ADMIN_USER=admin
      - NEXTCLOUD_ADMIN_PASSWORD=CHANGE_ME_admin
      - NEXTCLOUD_TRUSTED_DOMAINS=cloud.example.com
      - OVERWRITEPROTOCOL=https           # required behind a TLS proxy
    networks:
      - nc

volumes:
  db:
  nextcloud:

networks:
  nc: