Fix: Resolve 500 error by building package assets in Docker

- Added missing dependencies to root package.json for sub-package builds.
- Renamed Admin/tailwind.config.js to .cjs to fix ESM/CJS build conflict.
- Updated Dockerfile to run Vite build for Admin, Installer, and WebForm packages.

Dockerfile

@@ -36,6 +36,9 @@ RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
     && apt-get install -y nodejs \
     && npm install \
     && npm run build \
+    && (cd packages/Webkul/Admin && npx vite build) \
+    && (cd packages/Webkul/Installer && npx vite build) \
+    && (cd packages/Webkul/WebForm && npx vite build) \
     && rm -rf node_modules
 
 # 5. Script de Entrada