I'm missing something with the exemples given by nextcloud for Docker. I'm trying to run this one: https://github.com/nextcloud/docker/tree/master/.examples/docker-compose/insecure/postgres/fpm

Here is my modified docker-compose.yml file:

version: '3'

services:
  db:
    image: postgres:alpine
    restart: always
    volumes:
      - db:/srv/nextcloud/postgresql/data
    env_file:
      - db.env

  redis:
    image: redis:alpine
    restart: always

  app:
    image: nextcloud:fpm-alpine
    restart: always
    volumes:
      - nextcloud:/srv/nextcloud/www/html
    environment:
      - POSTGRES_HOST=db
      - REDIS_HOST=redis
    env_file:
      - db.env
    depends_on:
      - db
      - redis

  web:
    build: ./web
    restart: always
    ports:
      - 8080:80
    volumes:
      - nextcloud:/srv/nextcloud/www/html:ro
    depends_on:
      - app

  cron:
    image: nextcloud:fpm-alpine
    restart: always
    volumes:
      - nextcloud:/srv/nextcloud/www/html
    entrypoint: /cron.sh
    depends_on:
      - db
      - redis

volumes:
  db:
  nextcloud:

The other files are the same.

docker-compose up -d works fine but nginx sends a 404 when accessing the page and I can see none of my volumes in /srv/nextcloud/. I'm not sure what's going on, I tried to change permissions on /srv/nextcloud/ folder but it didn't help. Any ideas?