Change the user or permission of db in container

[jimmylin212]

Is it possible to change the user name from mongodb to other user in the container?

I would like to mount the directory SOME_PATH_ON_HOST into container and the user of this directory is USER. When the service started, it shows permission error. Can I change the user or permission of /data/db in container to USER instead of create a mock user mongodb on the host?

I am using docker stack to deploy my services. Kindly see my docker-compose.yml below:

version: '3.2'
services:
  db:
    image: mongo
    volumes:
      - "SOME_PATH_ON_HOST:/data/db"
    environment:
      - MONGO_INITDB_DATABASE=example_db
    deploy:
      replicas: 1

[wglambert]

The image has environment variables for changing the root username https://github.com/docker-library/docs/tree/master/mongo#mongo_initdb_root_username-mongo_initdb_root_password

For a standard user you can do https://docs.docker.com/engine/security/userns-remap/

[yosifkit]

Since #81 you can use --user (or user: in compose file) to specify any arbitrary user and group id (ie the owner id of the path on the host).