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/assets/fonts/infra/fs-font-file-content-resolver.js

@@ -0,0 +1,21 @@
+import { isAbsolute } from "node:path";
+import { AstroError, AstroErrorData } from "../../../core/errors/index.js";
+class FsFontFileContentResolver {
+  #readFileSync;
+  constructor({ readFileSync }) {
+    this.#readFileSync = readFileSync;
+  }
+  resolve(url) {
+    if (!isAbsolute(url)) {
+      return url;
+    }
+    try {
+      return url + this.#readFileSync(url);
+    } catch (cause) {
+      throw new AstroError(AstroErrorData.UnknownFilesystemError, { cause });
+    }
+  }
+}
+export {
+  FsFontFileContentResolver
+};