Please provide enough information so that others can review your pull request:

This allows Docker users to mount an arbitrary number of additional nginx config files at /etc/nginx/overrides.d which will then be included in the configuration used. Passed config files take precedence over both the directives in the http block. The following server block could also be overwritten as the first match takes precedence.

Example in a compose setup:

  penpot_frontend:
    image: penpotapp/frontend:1.19.1
    networks:
      - penpot
      - penpot_public
    restart: unless-stopped
    volumes:
      - penpot_assets:/opt/data/assets
      - ./logging.conf:/etc/nginx/overrides.d/01logging.conf
    depends_on:
      - penpot_backend
      - penpot_exporter
    environment:
      PENPOT_FLAGS: >-
        disable-registration
        disable-login
        enable-login-with-password
      PENPOT_REDIS_URI: redis://penpot_redis/0
      PENPOT_BACKEND_URI: http://penpot_backend:6060
      PENPOT_EXPORTER_URI: http://penpot_exporter:6061

where logging.conf looks like

access_log off;

Users that don't use this feature will not be affected and do not need to change anything.

Explain the details for making this change. What existing problem does the pull request solve?

I would like to disable access logging for the frontend container as it is behind another reverse proxy anyways and logs can get quite noisy/heavy. access_log /dev/stdout is hard coded in the nginx config, so there is no way of configuring this currently.

I am not entirely sure if documentation lives in this repo as well and needs to be updated. In case yes, please lmk and I can do this still.