[Bug] Docker WebUI 500 from /sdcpp/v1/capabilities

[ViViDboarder]

Git commit

https://github.com/leejet/stable-diffusion.cpp/pkgs/container/stable-diffusion.cpp/1178678032?tag=master-cuda

sha256:dcd82f38252a32822dcd0c80672d5948df8e63bb4a3064988e0f7c2bec10c100

Operating System & Version

CachyOS

GGML backends

CUDA

Command-line arguments used

entrypoint: ["/sd-server"]     command: [       "--verbose",       "--listen-ip",       "0.0.0.0",       "--diffusion-model",       "/models/diffusion_models/flux-2-klein-4b.safetensors",       "--llm",       "/models/text_encoders/qwen_3_4b.safetensors",       "--vae",       "/models/vae/flux2-vae.safetensors",       "--diffusion-fa",     ]

Steps to reproduce

Add this to my compose file:

  diffusioncpp:
    image: ghcr.io/leejet/stable-diffusion.cpp:master-cuda
    entrypoint: ["/sd-server"]
    command: [
      "--verbose",
      "--listen-ip",
      "0.0.0.0",
      "--diffusion-model",
      "/models/diffusion_models/flux-2-klein-4b.safetensors",
      "--llm",
      "/models/text_encoders/qwen_3_4b.safetensors",
      "--vae",
      "/models/vae/flux2-vae.safetensors",
      "--diffusion-fa",
    ]
    ports:
      - 1234:1234
    volumes:
      # Borrow my ComfyUI models
      - $USER_HOME/comfy/ComfyUI/models:/models
      - ./sdcpp:/output
    restart: unless-stopped
    deploy:
      resources:
        reservations:
          devices:
            - driver: nvidia
              capabilities: [gpu]

Run docker compose up -d

Go to http://localhost:1234 or curl -v http://localhost:1234/sdcpp/v1/capabilities

What you expected to happen

I expect to see a working web ui or a list of model capabilities.

What actually happened

Web UI loads but says "service unavailable". Curl request returns:

* Host localhost:1234 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:1234...
* Established connection to localhost (::1 port 1234) from ::1 port 37962
* using HTTP/1.x
> GET /sdcpp/v1/capabilities HTTP/1.1
> Host: localhost:1234
> User-Agent: curl/8.21.0
> Accept: */*
>
* Request completely sent off
< HTTP/1.1 500 Internal Server Error
< Connection: close
< Content-Length: 0
< EXCEPTION_WHAT: filesystem error: status: Operation not permitted [./proc/1/map_files/55c6e8164000-55c6e817d000]
< Access-Control-Allow-Methods: *
< Access-Control-Allow-Credentials: true
< Access-Control-Allow-Headers: *
< Access-Control-Allow-Origin: *
<
* shutting down connection #0

Logs / error messages / stack trace

Curl results provided, no logs show from the server despite the --verbose tag.

Additional context / environment details

No response