Document Rspack as the GDK frontend bundler

Stanislav Lashmanovrequested to merge
slashmanov/rspack-gdk-docs into master

Summary

GDK is switching its default frontend bundler to Rspack in Enable Rspack as the default frontend bundler (gitlab-development-kit!6068 - merged). These docs still tell people to configure Vite, so they stop working once that lands.

The GDK-in-a-box page is the one that matters most: it maps -p 3038:3038, which is the Vite port. The container now exposes 3808, so following the page as written leaves the dev server unreachable.

Reproduction steps

  1. Follow Configure GDK-in-a-box and start the container with the documented docker run command.
  2. Load GitLab in the browser. No frontend assets are served, since only the old Vite port is forwarded.

The same applies to the Vue 3 migration guide: gdk config set vite.vue_version 3 no longer selects a Vue version, and gdk restart vite restarts nothing.

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