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/vite-plugin-scripts/page-ssr.js

@@ -0,0 +1,36 @@
+import MagicString from "magic-string";
+import { normalizePath } from "vite";
+import { isPage } from "../core/util.js";
+import { PAGE_SSR_SCRIPT_ID } from "./index.js";
+function astroScriptsPostPlugin({
+  settings
+}) {
+  return {
+    name: "astro:scripts:page-ssr",
+    enforce: "post",
+    transform(code, id, options) {
+      if (!options?.ssr) return;
+      const hasInjectedScript = settings.scripts.some((s2) => s2.stage === "page-ssr");
+      if (!hasInjectedScript) return;
+      const filename = normalizePath(id);
+      let fileURL;
+      try {
+        fileURL = new URL(`file://${filename}`);
+      } catch {
+        return;
+      }
+      const fileIsPage = isPage(fileURL, settings);
+      if (!fileIsPage) return;
+      const s = new MagicString(code, { filename });
+      s.prepend(`import '${PAGE_SSR_SCRIPT_ID}';
+`);
+      return {
+        code: s.toString(),
+        map: s.generateMap({ hires: "boundary" })
+      };
+    }
+  };
+}
+export {
+  astroScriptsPostPlugin as default
+};