yeah, docker and permissions always a pain. you tried passing --user or through compose? [1]:

  my-service:
    image: ubuntu:latest
    user: ${MY_UID}:${MY_GID}
    volumes:
      - /etc/passwd:/etc/passwd:ro
      - /etc/group:/etc/group:ro

[1] https://stackoverflow.com/a/71027261

hope this helps/solves