Your data directory is readable by other people. Help

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I am trying to set up nextcloud

This is my docker compose file

version: '2'

volumes:
  nextcloud:
  db:

services:
  db:
    image: mariadb:10.6
    restart: unless-stopped
    command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
    volumes:
      - db:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=
      - MYSQL_PASSWORD=
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud

  app:
    image: nextcloud
    restart: unless-stopped
    ports:
      - 8085:80
    links:
      - db
    volumes:
      - /home/adam/docker/nextcloud:/var/www/html
      - /home/adam/Share/SSD/nextcloud/data:/var/www/html/data
    environment:
      - MYSQL_PASSWORD=
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud
      - MYSQL_HOST=db

once I deployed it and made a admin account I got this message

Error

Your data directory is readable by other people.

Please change the permissions to 0770 so that the directory cannot be listed by other people.

so I tried sudo chmod 0770 /home/adam/Share/SSD/nextcloud/data but I still get the error, I have also tried to remake the container without - /home/adam/Share/SSD/nextcloud/data:/var/www/html/data and it works

Anyone know how to fix this ?