fix: Fix product page syntax errors

1. Remove duplicate/broken code in product tables section
2. Fix PostCSS config for Tailwind 4
3. Add @tailwindcss/postcss dependency
4. Remove --production flag from Dockerfile (sharp required)

All fixes enable successful Docker build with favicon working.

node_modules/astro/dist/prerender/metadata.js

@@ -0,0 +1,18 @@
+import { viteID } from "../core/util.js";
+function getPrerenderStatus({
+  filePath,
+  loader
+}) {
+  const fileID = viteID(filePath);
+  const moduleInfo = loader.getModuleInfo(fileID);
+  if (!moduleInfo) return;
+  const prerenderStatus = getPrerenderMetadata(moduleInfo);
+  return prerenderStatus;
+}
+function getPrerenderMetadata(moduleInfo) {
+  return moduleInfo?.meta?.astro?.pageOptions?.prerender;
+}
+export {
+  getPrerenderMetadata,
+  getPrerenderStatus
+};