Docker composeでvoluemsを設定したとき、Permission deniedでアクセスできない場合がある。

---
version: '3'
services:
  nginx:
    image: nginx:latest
    ports:
      - "8080:80"
    volumes:
      - ./public:/usr/share/nginx/html

# docker exec -it app-nginx-1 bash
root@2c746d512cc2:/# ls /usr/share/nginx/html/ -al
ls: cannot access '/usr/share/nginx/html/index.html': Permission denied
total 4
drwxr-xr-x. 2 root root  40 Mar  1 13:59 .
drwxr-xr-x. 3 root root  18 Mar  1 13:59 ..
-rw-r--r--. 1 root root 497 Jan 25 15:03 50x.html
-?????????? ? ?    ?      ?            ? index.html

setenforce 0

  volumes:
    - ./public:/usr/share/nginx/html:z