[FR]: Support configurable frontend URL prefix for local deployment

[testcoder-ui]

Proposal summary

Allow adding an arbitrary prefix to the frontend URL during local deployment.

• Users can configure any prefix, e.g., /opik, /myapp, etc.
• The frontend will then be accessible at localhost:5173/<prefix> instead of just localhost:5173.
• This is intended for local setups to avoid conflicts with other services and does not affect production deployments.

Motivation

No response

[Lothiraldan]

Hi @testcoder-ui, could you share a bit more details about what you are trying to achieve?
When you mention local setups, do you mean docker-compose based deployments?
Could you share a bit more details about the issues that you are facing? If you are facing a port conflict, you should be able to change the exposed port of the deployment.

[testcoder-ui]

@Lothiraldan
Thanks for the reply!

It’s actually about Helm chart deployment rather than docker-compose.
I already have multiple services running on localhost, and I’d like the Opik frontend to be accessible under a path prefix such as /opik instead of always mounting at /. That way, in our monitoring dashboard we can just link to http://localhost/opik, and it integrates cleanly alongside other services we expose on localhost.

It’s not a port conflict problem — we just want a configurable path prefix (e.g. /opik) for local deployments. In addition, since Opik doesn’t provide authentication out of the box, we can put it behind our Nginx with auth, so requests go through our backend auth first and then proxy to /opik. Having a prefix makes this setup much simpler.

Right now I managed to make it work by manually modifying opik-frontend’s env.production and configmap-frontend-nginx.yaml to change the rootPath, then rebuilding the frontend image and forcing Helm to use my local image (otherwise it keeps pulling the remote one). This works, but it’s a bit cumbersome to maintain. If the Helm chart provided an option to configure the path prefix directly, it would be much simpler.