GooseCode_Public_Skills_Shop

Common pitfalls and fixes when building and running Next.js apps with Docker Compose on Windows/Linux. Covers .dockerignore, standalone output, port conflicts, init containers, volume mounts, and multi-platform builds.

Use right after shadcn init, before building screens — or on a Tailwind v4 App Router app that looks wrong for no obvious reason. Fixes six failures a green build misses — serif fallback fonts, content under a fixed sidebar, ignored theme tokens, hydration mismatches, vanishing navigation.

Use before writing any data layer or auth on a Next.js App Router app. Sets up Supabase with @supabase/ssr, the Next.js client — browser client, server client and session middleware, plus the local Docker stack, SQL migrations, generated types and how to deploy those migrations to a hosted project. No ORM. A plain supabase-js createClient is the wrong client here and breaks auth across the server/client boundary. Start local; a hosted project needs an account only the user can create.

Scaffolds a Next.js App Router project that shadcn/ui installs into cleanly, and repairs the upstream `shadcn init` bug that leaves such projects rendering in Times New Roman. Use BEFORE creating a Next.js app, ahead of the shadcn skill. Not for an app that already exists.

Chooses and installs a shadcn/ui theme that fits the product being built, from the twelve free shadcndesign themes, and loads the font each one needs. Use once a shadcn project exists and no visual direction has been given. Not for projects with an established brand or palette.