[BUG] Using customer PUID/PGID gives 502 bad gateway

[TimoVerbrugghe]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When using this container without setting PUID/PGID, the container starts normally. However, when setting environment variables PUID/PGID (in my case to 3000), the containers doesn't seem to start normally. Going to the exposed port just gives a 502 bad gateway NGINX error...

Expected Behavior

Container starts normally

Steps To Reproduce

1. Create docker compose with PUID & PGID set to custom value (f.e. 3000)

Environment

- OS: NixOS 25.05
- How docker service was installed: nixpkgs

CPU architecture

x86-64

Docker creation

filezilla:
    image: lscr.io/linuxserver/filezilla:latest
    container_name: filezilla
    restart: always
    networks:
      - dockerproxy
    environment:
      - PUID=3000
      - PGID=3000
      - TZ=Europe/Brussels
    volumes:
      - filezilla:/config
      - media:/media
      - isos:/isos
      - downloads:/downloads
    ports:
      - 13001:3000
    labels:
      tsdproxy.enable: true
      tsdproxy.name: "filezilla"
      tsdproxy.container_port: 3000
      tsdproxy.ephemeral: false

Container logs

───────────────────────────────────────

      ██╗     ███████╗██╗ ██████╗

      ██║     ██╔════╝██║██╔═══██╗

      ██║     ███████╗██║██║   ██║

      ██║     ╚════██║██║██║   ██║

      ███████╗███████║██║╚██████╔╝

      ╚══════╝╚══════╝╚═╝ ╚═════╝

   Brought to you by linuxserver.io

───────────────────────────────────────

To support LSIO projects visit:

https://www.linuxserver.io/donate/

───────────────────────────────────────

GID/UID

───────────────────────────────────────

User UID:    3000

User GID:    3000

───────────────────────────────────────

[custom-init] No custom files found, skipping...

[ls.io-init] done.

Openbox-Message: Failed to open the display from the DISPLAY environment variable.

_XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root

Xvnc KasmVNC 1.3.3 - built May 31 2025 18:49:33

Copyright (C) 1999-2018 KasmVNC Team and many others (see README.me)

See http://kasmweb.com for information on KasmVNC.

Underlying X server release 12101014

[mi] mieq: warning: overriding existing handler 0 with 0x55bc5c765a90 for event 2

[mi] mieq: warning: overriding existing handler 0 with 0x55bc5c765a90 for event 3

Obt-Message: Xinerama extension is not present on the server

Reading locale option from /config/.config/filezilla/filezilla.xml

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[LinuxServer-CI]

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

[TimoVerbrugghe]

Would like to keep it open since still experience the same issue. Happy to provide any additional info where needed.

[j0nnymoe]

Not a rootless of docker by any chance?

[TimoVerbrugghe]

@j0nnymoe not that I know of at least. Deploying this docker container on truenas (through portainer), which I believe is not rootless.

[thelamer]

I cannot replicate this, the most liklely culprit is your proxy.

[drizuid]

i also just spun this up using docker on a linux host (we do not support or recommend portainer and we do not test on truenas) and could not replicate the issue.

[TimoVerbrugghe]

Allright closing since it cannot be replicated, will see if I can work around the issue by changing permissions on the filesystems I mount myself