Running LabelStudio in a Docker container in GCP at a specific URL

Label Studio Support
1

Hi,

I am trying to run LabelStudio in a Docker container on a VM in GCP.

The container is listening to a specific port (10xxx).

The URL https://my.domain.com/labelstudio/ is routed to the VM and port 10xxx via a GC load balancer.

I have set up the environment variables:

LABEL_STUDIO_HOST=”https://my.domain.com/labelstudio/”

LABEL_STUDIO_PORT=”10xxx”

When starting LabelStudio I see:
=> Hostname correctly is set to: https://my.domain.com/labelstudio/
=> Django URL prefix is set to: /labelstudio
=> Database and media directory: /label-studio/data
=> Static URL is set to: /static/

[…]

Starting development server at http://0.0.0.0:10xxx/

The problem starts when I try to access https://my.domain.com/labelstudio/

I get HTTP 404:
[2025-10-09 11:09:28,117] [django.request::log_response::253] [WARNING] Not Found: /labelstudio/labelstudio/
[2025-10-09 11:09:28,121] [django.server::log_message::213] [WARNING] “GET /labelstudio/ HTTP/1.1” 404 170851

I tried playing with the environment variable LABEL_STUDIO_HOST without luck.

Any help would be appreciated.

Many thanks in advance.

2

Hello,

subdomains are allowed only when you use it together with our nginx configuration:

3

Many thanks. I got it working without nginx, but with Load Balancer URL rewrite and Docker configurations.

4

Great! Thank you for sharing your solution with us!