Custom Traefik labels added via Docker CLI are lost after redeployment for Standalone Applications

What problem will this feature address?

When adding custom Traefik labels (e.g., for reverse proxying an /api path to a backend service or setting custom load balancing) to a Standalone Application using the docker service update command, these labels are completely wiped out whenever a new deployment is triggered via the Dokploy UI.

It seems Dokploy forces its internal state on the Docker Swarm service during deployment, overriding any manual labels added via CLI.

Problem: There is currently no direct field in the Dokploy UI for "Standalone Applications" to persist custom Traefik labels/middlewares. While Docker Compose services have a
docker-compose.yml
to store these, Standalone Apps (Nixpacks/Dockerfile) rely on Dokploy's automated generation, which is too restrictive for advanced proxying needs.

Example Use Case: We need to route app.domain.com to the frontend container (Port 3000) and app.domain.com/api to a backend container (Port 8001) using PathPrefix rules. Currently, this can only be achieved via CLI, but it breaks on every Git push/redeploy.

Describe the solution you'd like

Suggested Solution:

Persistence: Dokploy should detect and keep existing custom labels during service updates, or
Advanced UI: Provide a "Custom Labels" text area in the Advanced Settings for Standalone Applications where users can define persistent labels that Dokploy will include in every deployment.
Current Workaround: Using a "Schedule" job in Dokploy to run the docker service update command every minute to re-apply the lost labels.

Describe alternatives you've considered

Additional context

No response

Will you send a PR to implement it?

No

Start by tracing the Standalone Applications deployment path and the Docker service update operation used by Dokploy. Compare the labels applied before and after a UI redeployment, then determine whether persistence or an Advanced Settings custom-labels field fits the existing flow. Done means custom Traefik labels survive subsequent deployments and are covered by an appropriate test.